Home / 80,289.61-120,437.15-38,147.94

Finding the Fourth Proportional to 80,289.61, 120,437.15 and 38,147.94

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Solution

The fourth proportional to 80,289.61, 120,437.15 and 38,147.94 is: 57,223.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,289.61 : 120,437.15 = 38,147.94 : x
  2. Step 2: Convert to fraction form
    80,289.61/120,437.15 = 38,147.94/x
  3. Step 3: Cross multiply
    80,289.61x = 120,437.15 × 38,147.94
  4. Step 4: Simplify right side
    80,289.61x = 4,594,428,981.23
  5. Step 5: Solve for x
    x = 4,594,428,981.23/80,289.61
  6. Step 6: Final answer
    x = 57,223.21

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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.