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Finding the Fourth Proportional to 83,658.87, 115,449.45 and 45,935.55

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Solution

The fourth proportional to 83,658.87, 115,449.45 and 45,935.55 is: 63,391.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,658.87 : 115,449.45 = 45,935.55 : x
  2. Step 2: Convert to fraction form
    83,658.87/115,449.45 = 45,935.55/x
  3. Step 3: Cross multiply
    83,658.87x = 115,449.45 × 45,935.55
  4. Step 4: Simplify right side
    83,658.87x = 5,303,233,982.95
  5. Step 5: Solve for x
    x = 5,303,233,982.95/83,658.87
  6. Step 6: Final answer
    x = 63,391.17

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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.