Home / 57,136.38-78,848.20-31,985.88

Finding the Fourth Proportional to 57,136.38, 78,848.20 and 31,985.88

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Solution

The fourth proportional to 57,136.38, 78,848.20 and 31,985.88 is: 44,140.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,136.38 : 78,848.20 = 31,985.88 : x
  2. Step 2: Convert to fraction form
    57,136.38/78,848.20 = 31,985.88/x
  3. Step 3: Cross multiply
    57,136.38x = 78,848.20 × 31,985.88
  4. Step 4: Simplify right side
    57,136.38x = 2,522,029,063.42
  5. Step 5: Solve for x
    x = 2,522,029,063.42/57,136.38
  6. Step 6: Final answer
    x = 44,140.51

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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.