Home / 57,120.13-85,531.15-45,965.89

Finding the Fourth Proportional to 57,120.13, 85,531.15 and 45,965.89

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Solution

The fourth proportional to 57,120.13, 85,531.15 and 45,965.89 is: 68,828.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,120.13 : 85,531.15 = 45,965.89 : x
  2. Step 2: Convert to fraction form
    57,120.13/85,531.15 = 45,965.89/x
  3. Step 3: Cross multiply
    57,120.13x = 85,531.15 × 45,965.89
  4. Step 4: Simplify right side
    57,120.13x = 3,931,515,432.47
  5. Step 5: Solve for x
    x = 3,931,515,432.47/57,120.13
  6. Step 6: Final answer
    x = 68,828.90

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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.