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Finding the Fourth Proportional to 37,200.71, 55,799.90 and 9,120.85

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Solution

The fourth proportional to 37,200.71, 55,799.90 and 9,120.85 is: 13,680.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,200.71 : 55,799.90 = 9,120.85 : x
  2. Step 2: Convert to fraction form
    37,200.71/55,799.90 = 9,120.85/x
  3. Step 3: Cross multiply
    37,200.71x = 55,799.90 × 9,120.85
  4. Step 4: Simplify right side
    37,200.71x = 508,942,193.31
  5. Step 5: Solve for x
    x = 508,942,193.31/37,200.71
  6. Step 6: Final answer
    x = 13,680.98

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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.