Home / 39,578,174,075.55-54,617,915,418.29-21,513,690,287.38

Finding the Fourth Proportional to 39,578,174,075.55, 54,617,915,418.29 and 21,513,690,287.38

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Solution

The fourth proportional to 39,578,174,075.55, 54,617,915,418.29 and 21,513,690,287.38 is: 29,688,911,727.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,578,174,075.55 : 54,617,915,418.29 = 21,513,690,287.38 : x
  2. Step 2: Convert to fraction form
    39,578,174,075.55/54,617,915,418.29 = 21,513,690,287.38/x
  3. Step 3: Cross multiply
    39,578,174,075.55x = 54,617,915,418.29 × 21,513,690,287.38
  4. Step 4: Simplify right side
    39,578,174,075.55x = 1,175,032,916,451,407,953,920
  5. Step 5: Solve for x
    x = 1,175,032,916,451,407,953,920/39,578,174,075.55
  6. Step 6: Final answer
    x = 29,688,911,727.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.