Home / 85,442.40-127,861.20-74,469.60

Finding the Fourth Proportional to 85,442.40, 127,861.20 and 74,469.60

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Solution

The fourth proportional to 85,442.40, 127,861.20 and 74,469.60 is: 111,440.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,442.40 : 127,861.20 = 74,469.60 : x
  2. Step 2: Convert to fraction form
    85,442.40/127,861.20 = 74,469.60/x
  3. Step 3: Cross multiply
    85,442.40x = 127,861.20 × 74,469.60
  4. Step 4: Simplify right side
    85,442.40x = 9,521,772,419.52
  5. Step 5: Solve for x
    x = 9,521,772,419.52/85,442.40
  6. Step 6: Final answer
    x = 111,440.84

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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.