Home / 78,872.08-118,325.13-22,711.81

Finding the Fourth Proportional to 78,872.08, 118,325.13 and 22,711.81

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Solution

The fourth proportional to 78,872.08, 118,325.13 and 22,711.81 is: 34,072.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,872.08 : 118,325.13 = 22,711.81 : x
  2. Step 2: Convert to fraction form
    78,872.08/118,325.13 = 22,711.81/x
  3. Step 3: Cross multiply
    78,872.08x = 118,325.13 × 22,711.81
  4. Step 4: Simplify right side
    78,872.08x = 2,687,377,870.79
  5. Step 5: Solve for x
    x = 2,687,377,870.79/78,872.08
  6. Step 6: Final answer
    x = 34,072.61

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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.