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Finding the Fourth Proportional to 78,998.67, 118,498.01 and 31,635.27

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Solution

The fourth proportional to 78,998.67, 118,498.01 and 31,635.27 is: 47,452.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,998.67 : 118,498.01 = 31,635.27 : x
  2. Step 2: Convert to fraction form
    78,998.67/118,498.01 = 31,635.27/x
  3. Step 3: Cross multiply
    78,998.67x = 118,498.01 × 31,635.27
  4. Step 4: Simplify right side
    78,998.67x = 3,748,716,382.64
  5. Step 5: Solve for x
    x = 3,748,716,382.64/78,998.67
  6. Step 6: Final answer
    x = 47,452.91

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Similar ratio
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1.5x scale

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.