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Finding the Fourth Proportional to 66,445.17, 91,695.02 and 39,588

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Solution

The fourth proportional to 66,445.17, 91,695.02 and 39,588 is: 54,631.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,445.17 : 91,695.02 = 39,588 : x
  2. Step 2: Convert to fraction form
    66,445.17/91,695.02 = 39,588/x
  3. Step 3: Cross multiply
    66,445.17x = 91,695.02 × 39,588
  4. Step 4: Simplify right side
    66,445.17x = 3,630,022,253.82
  5. Step 5: Solve for x
    x = 3,630,022,253.82/66,445.17
  6. Step 6: Final answer
    x = 54,631.85

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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.