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Finding the Fourth Proportional to 83,419.64, 124,815.54 and 58,508.30

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Solution

The fourth proportional to 83,419.64, 124,815.54 and 58,508.30 is: 87,542.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,419.64 : 124,815.54 = 58,508.30 : x
  2. Step 2: Convert to fraction form
    83,419.64/124,815.54 = 58,508.30/x
  3. Step 3: Cross multiply
    83,419.64x = 124,815.54 × 58,508.30
  4. Step 4: Simplify right side
    83,419.64x = 7,302,745,058.98
  5. Step 5: Solve for x
    x = 7,302,745,058.98/83,419.64
  6. Step 6: Final answer
    x = 87,542.27

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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.