Home / 81,133.20-121,641.44-36,737.10

Finding the Fourth Proportional to 81,133.20, 121,641.44 and 36,737.10

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Solution

The fourth proportional to 81,133.20, 121,641.44 and 36,737.10 is: 55,079.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,133.20 : 121,641.44 = 36,737.10 : x
  2. Step 2: Convert to fraction form
    81,133.20/121,641.44 = 36,737.10/x
  3. Step 3: Cross multiply
    81,133.20x = 121,641.44 × 36,737.10
  4. Step 4: Simplify right side
    81,133.20x = 4,468,753,745.42
  5. Step 5: Solve for x
    x = 4,468,753,745.42/81,133.20
  6. Step 6: Final answer
    x = 55,079.22

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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.