Home / 39,283,214,724.92-54,210,858,029.88-21,218,730,830.12

Finding the Fourth Proportional to 39,283,214,724.92, 54,210,858,029.88 and 21,218,730,830.12

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Solution

The fourth proportional to 39,283,214,724.92, 54,210,858,029.88 and 21,218,730,830.12 is: 29,281,860,271.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,283,214,724.92 : 54,210,858,029.88 = 21,218,730,830.12 : x
  2. Step 2: Convert to fraction form
    39,283,214,724.92/54,210,858,029.88 = 21,218,730,830.12/x
  3. Step 3: Cross multiply
    39,283,214,724.92x = 54,210,858,029.88 × 21,218,730,830.12
  4. Step 4: Simplify right side
    39,283,214,724.92x = 1,150,285,604,605,872,963,584
  5. Step 5: Solve for x
    x = 1,150,285,604,605,872,963,584/39,283,214,724.92
  6. Step 6: Final answer
    x = 29,281,860,271.89

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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.