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Finding the Fourth Proportional to 78,453.92, 108,248.45 and 44,454.57

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Solution

The fourth proportional to 78,453.92, 108,248.45 and 44,454.57 is: 61,337.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,453.92 : 108,248.45 = 44,454.57 : x
  2. Step 2: Convert to fraction form
    78,453.92/108,248.45 = 44,454.57/x
  3. Step 3: Cross multiply
    78,453.92x = 108,248.45 × 44,454.57
  4. Step 4: Simplify right side
    78,453.92x = 4,812,138,528.67
  5. Step 5: Solve for x
    x = 4,812,138,528.67/78,453.92
  6. Step 6: Final answer
    x = 61,337.14

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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.