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Finding the Fourth Proportional to 87,230.40, 130,845.60 and 45,110.40

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Solution

The fourth proportional to 87,230.40, 130,845.60 and 45,110.40 is: 67,665.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,230.40 : 130,845.60 = 45,110.40 : x
  2. Step 2: Convert to fraction form
    87,230.40/130,845.60 = 45,110.40/x
  3. Step 3: Cross multiply
    87,230.40x = 130,845.60 × 45,110.40
  4. Step 4: Simplify right side
    87,230.40x = 5,902,497,354.24
  5. Step 5: Solve for x
    x = 5,902,497,354.24/87,230.40
  6. Step 6: Final answer
    x = 67,665.60

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1.5x scale

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.