Home / 78,306.92-117,448.14-25,715.96

Finding the Fourth Proportional to 78,306.92, 117,448.14 and 25,715.96

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Solution

The fourth proportional to 78,306.92, 117,448.14 and 25,715.96 is: 38,569.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,306.92 : 117,448.14 = 25,715.96 : x
  2. Step 2: Convert to fraction form
    78,306.92/117,448.14 = 25,715.96/x
  3. Step 3: Cross multiply
    78,306.92x = 117,448.14 × 25,715.96
  4. Step 4: Simplify right side
    78,306.92x = 3,020,291,670.31
  5. Step 5: Solve for x
    x = 3,020,291,670.31/78,306.92
  6. Step 6: Final answer
    x = 38,569.92

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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.