Home / 78,330.72-108,095.32-42,522.04

Finding the Fourth Proportional to 78,330.72, 108,095.32 and 42,522.04

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Solution

The fourth proportional to 78,330.72, 108,095.32 and 42,522.04 is: 58,679.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,330.72 : 108,095.32 = 42,522.04 : x
  2. Step 2: Convert to fraction form
    78,330.72/108,095.32 = 42,522.04/x
  3. Step 3: Cross multiply
    78,330.72x = 108,095.32 × 42,522.04
  4. Step 4: Simplify right side
    78,330.72x = 4,596,433,520.85
  5. Step 5: Solve for x
    x = 4,596,433,520.85/78,330.72
  6. Step 6: Final answer
    x = 58,679.83

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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.