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Finding the Fourth Proportional to 57,770.65, 86,655.95 and 21,753.88

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Solution

The fourth proportional to 57,770.65, 86,655.95 and 21,753.88 is: 32,630.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,770.65 : 86,655.95 = 21,753.88 : x
  2. Step 2: Convert to fraction form
    57,770.65/86,655.95 = 21,753.88/x
  3. Step 3: Cross multiply
    57,770.65x = 86,655.95 × 21,753.88
  4. Step 4: Simplify right side
    57,770.65x = 1,885,103,419.81
  5. Step 5: Solve for x
    x = 1,885,103,419.81/57,770.65
  6. Step 6: Final answer
    x = 32,630.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.