Home / 79,438,887.45-119,158,155.99-21,146,578.53

Finding the Fourth Proportional to 79,438,887.45, 119,158,155.99 and 21,146,578.53

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Solution

The fourth proportional to 79,438,887.45, 119,158,155.99 and 21,146,578.53 is: 31,719,821.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,438,887.45 : 119,158,155.99 = 21,146,578.53 : x
  2. Step 2: Convert to fraction form
    79,438,887.45/119,158,155.99 = 21,146,578.53/x
  3. Step 3: Cross multiply
    79,438,887.45x = 119,158,155.99 × 21,146,578.53
  4. Step 4: Simplify right side
    79,438,887.45x = 2,519,787,303,132,525
  5. Step 5: Solve for x
    x = 2,519,787,303,132,525/79,438,887.45
  6. Step 6: Final answer
    x = 31,719,821.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.