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Finding the Fourth Proportional to 87,458.70, 120,750.03 and 67,278.36

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Solution

The fourth proportional to 87,458.70, 120,750.03 and 67,278.36 is: 92,888.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,458.70 : 120,750.03 = 67,278.36 : x
  2. Step 2: Convert to fraction form
    87,458.70/120,750.03 = 67,278.36/x
  3. Step 3: Cross multiply
    87,458.70x = 120,750.03 × 67,278.36
  4. Step 4: Simplify right side
    87,458.70x = 8,123,863,988.35
  5. Step 5: Solve for x
    x = 8,123,863,988.35/87,458.70
  6. Step 6: Final answer
    x = 92,888.00

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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.