Home / 84,731.61-126,942.50-39,670.30

Finding the Fourth Proportional to 84,731.61, 126,942.50 and 39,670.30

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Solution

The fourth proportional to 84,731.61, 126,942.50 and 39,670.30 is: 59,432.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,731.61 : 126,942.50 = 39,670.30 : x
  2. Step 2: Convert to fraction form
    84,731.61/126,942.50 = 39,670.30/x
  3. Step 3: Cross multiply
    84,731.61x = 126,942.50 × 39,670.30
  4. Step 4: Simplify right side
    84,731.61x = 5,035,847,057.75
  5. Step 5: Solve for x
    x = 5,035,847,057.75/84,731.61
  6. Step 6: Final answer
    x = 59,432.92

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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.