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Finding the Fourth Proportional to 66,487.48, 91,925.58 and 63,549.88

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Solution

The fourth proportional to 66,487.48, 91,925.58 and 63,549.88 is: 87,864.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,487.48 : 91,925.58 = 63,549.88 : x
  2. Step 2: Convert to fraction form
    66,487.48/91,925.58 = 63,549.88/x
  3. Step 3: Cross multiply
    66,487.48x = 91,925.58 × 63,549.88
  4. Step 4: Simplify right side
    66,487.48x = 5,841,859,577.93
  5. Step 5: Solve for x
    x = 5,841,859,577.93/66,487.48
  6. Step 6: Final answer
    x = 87,864.05

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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.