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Finding the Fourth Proportional to 85,635.60, 118,174.72 and 47,396.76

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Solution

The fourth proportional to 85,635.60, 118,174.72 and 47,396.76 is: 65,406.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,635.60 : 118,174.72 = 47,396.76 : x
  2. Step 2: Convert to fraction form
    85,635.60/118,174.72 = 47,396.76/x
  3. Step 3: Cross multiply
    85,635.60x = 118,174.72 × 47,396.76
  4. Step 4: Simplify right side
    85,635.60x = 5,601,098,841.91
  5. Step 5: Solve for x
    x = 5,601,098,841.91/85,635.60
  6. Step 6: Final answer
    x = 65,406.20

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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.