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Finding the Fourth Proportional to 83,687.95, 115,490.27 and 45,962.20

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Solution

The fourth proportional to 83,687.95, 115,490.27 and 45,962.20 is: 63,428.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,687.95 : 115,490.27 = 45,962.20 : x
  2. Step 2: Convert to fraction form
    83,687.95/115,490.27 = 45,962.20/x
  3. Step 3: Cross multiply
    83,687.95x = 115,490.27 × 45,962.20
  4. Step 4: Simplify right side
    83,687.95x = 5,308,186,887.79
  5. Step 5: Solve for x
    x = 5,308,186,887.79/83,687.95
  6. Step 6: Final answer
    x = 63,428.33

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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.