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Finding the Fourth Proportional to 85,757.40, 118,543.50 and 71,527.32

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Solution

The fourth proportional to 85,757.40, 118,543.50 and 71,527.32 is: 98,873.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,757.40 : 118,543.50 = 71,527.32 : x
  2. Step 2: Convert to fraction form
    85,757.40/118,543.50 = 71,527.32/x
  3. Step 3: Cross multiply
    85,757.40x = 118,543.50 × 71,527.32
  4. Step 4: Simplify right side
    85,757.40x = 8,479,098,858.42
  5. Step 5: Solve for x
    x = 8,479,098,858.42/85,757.40
  6. Step 6: Final answer
    x = 98,873.09

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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.