Home / 78,966,356.71-108,936,850.98-51,098,073.58

Finding the Fourth Proportional to 78,966,356.71, 108,936,850.98 and 51,098,073.58

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Solution

The fourth proportional to 78,966,356.71, 108,936,850.98 and 51,098,073.58 is: 70,491,579.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,966,356.71 : 108,936,850.98 = 51,098,073.58 : x
  2. Step 2: Convert to fraction form
    78,966,356.71/108,936,850.98 = 51,098,073.58/x
  3. Step 3: Cross multiply
    78,966,356.71x = 108,936,850.98 × 51,098,073.58
  4. Step 4: Simplify right side
    78,966,356.71x = 5,566,463,226,949,535
  5. Step 5: Solve for x
    x = 5,566,463,226,949,535/78,966,356.71
  6. Step 6: Final answer
    x = 70,491,579.69

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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.