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Finding the Fourth Proportional to 52,513.80, 78,821.90 and 26,248.20

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Solution

The fourth proportional to 52,513.80, 78,821.90 and 26,248.20 is: 39,397.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,513.80 : 78,821.90 = 26,248.20 : x
  2. Step 2: Convert to fraction form
    52,513.80/78,821.90 = 26,248.20/x
  3. Step 3: Cross multiply
    52,513.80x = 78,821.90 × 26,248.20
  4. Step 4: Simplify right side
    52,513.80x = 2,068,932,995.58
  5. Step 5: Solve for x
    x = 2,068,932,995.58/52,513.80
  6. Step 6: Final answer
    x = 39,397.89

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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.