Home / 67,515.40-101,273.10-66,478.60

Finding the Fourth Proportional to 67,515.40, 101,273.10 and 66,478.60

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Solution

The fourth proportional to 67,515.40, 101,273.10 and 66,478.60 is: 99,717.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,515.40 : 101,273.10 = 66,478.60 : x
  2. Step 2: Convert to fraction form
    67,515.40/101,273.10 = 66,478.60/x
  3. Step 3: Cross multiply
    67,515.40x = 101,273.10 × 66,478.60
  4. Step 4: Simplify right side
    67,515.40x = 6,732,493,905.66
  5. Step 5: Solve for x
    x = 6,732,493,905.66/67,515.40
  6. Step 6: Final answer
    x = 99,717.90

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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.