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Finding the Fourth Proportional to 86,358.92, 129,538.38 and 49,397

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Solution

The fourth proportional to 86,358.92, 129,538.38 and 49,397 is: 74,095.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,358.92 : 129,538.38 = 49,397 : x
  2. Step 2: Convert to fraction form
    86,358.92/129,538.38 = 49,397/x
  3. Step 3: Cross multiply
    86,358.92x = 129,538.38 × 49,397
  4. Step 4: Simplify right side
    86,358.92x = 6,398,807,356.86
  5. Step 5: Solve for x
    x = 6,398,807,356.86/86,358.92
  6. Step 6: Final answer
    x = 74,095.50

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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.