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Finding the Fourth Proportional to 81,885.92, 112,996.56 and 45,588.80

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Solution

The fourth proportional to 81,885.92, 112,996.56 and 45,588.80 is: 62,909.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,885.92 : 112,996.56 = 45,588.80 : x
  2. Step 2: Convert to fraction form
    81,885.92/112,996.56 = 45,588.80/x
  3. Step 3: Cross multiply
    81,885.92x = 112,996.56 × 45,588.80
  4. Step 4: Simplify right side
    81,885.92x = 5,151,377,574.53
  5. Step 5: Solve for x
    x = 5,151,377,574.53/81,885.92
  6. Step 6: Final answer
    x = 62,909.20

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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.