Home / 74,765.29-103,172.25-42,495.70

Finding the Fourth Proportional to 74,765.29, 103,172.25 and 42,495.70

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Solution

The fourth proportional to 74,765.29, 103,172.25 and 42,495.70 is: 58,641.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,765.29 : 103,172.25 = 42,495.70 : x
  2. Step 2: Convert to fraction form
    74,765.29/103,172.25 = 42,495.70/x
  3. Step 3: Cross multiply
    74,765.29x = 103,172.25 × 42,495.70
  4. Step 4: Simplify right side
    74,765.29x = 4,384,376,984.33
  5. Step 5: Solve for x
    x = 4,384,376,984.33/74,765.29
  6. Step 6: Final answer
    x = 58,641.88

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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.