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Finding the Fourth Proportional to 78,761.88, 118,166.28 and 36,666.84

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Solution

The fourth proportional to 78,761.88, 118,166.28 and 36,666.84 is: 55,011.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,761.88 : 118,166.28 = 36,666.84 : x
  2. Step 2: Convert to fraction form
    78,761.88/118,166.28 = 36,666.84/x
  3. Step 3: Cross multiply
    78,761.88x = 118,166.28 × 36,666.84
  4. Step 4: Simplify right side
    78,761.88x = 4,332,784,082.16
  5. Step 5: Solve for x
    x = 4,332,784,082.16/78,761.88
  6. Step 6: Final answer
    x = 55,011.18

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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.