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Finding the Fourth Proportional to 83,513.52, 115,248.60 and 45,788.40

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Solution

The fourth proportional to 83,513.52, 115,248.60 and 45,788.40 is: 63,187.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,513.52 : 115,248.60 = 45,788.40 : x
  2. Step 2: Convert to fraction form
    83,513.52/115,248.60 = 45,788.40/x
  3. Step 3: Cross multiply
    83,513.52x = 115,248.60 × 45,788.40
  4. Step 4: Simplify right side
    83,513.52x = 5,277,048,996.24
  5. Step 5: Solve for x
    x = 5,277,048,996.24/83,513.52
  6. Step 6: Final answer
    x = 63,187.96

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1.5x scale

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.