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Finding the Fourth Proportional to 83,855.52, 115,720.92 and 45,615.06

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Solution

The fourth proportional to 83,855.52, 115,720.92 and 45,615.06 is: 62,948.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,855.52 : 115,720.92 = 45,615.06 : x
  2. Step 2: Convert to fraction form
    83,855.52/115,720.92 = 45,615.06/x
  3. Step 3: Cross multiply
    83,855.52x = 115,720.92 × 45,615.06
  4. Step 4: Simplify right side
    83,855.52x = 5,278,616,709.06
  5. Step 5: Solve for x
    x = 5,278,616,709.06/83,855.52
  6. Step 6: Final answer
    x = 62,948.95

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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.