Home / 57,614.40-86,421.60-54,115.20

Finding the Fourth Proportional to 57,614.40, 86,421.60 and 54,115.20

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Solution

The fourth proportional to 57,614.40, 86,421.60 and 54,115.20 is: 81,172.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,614.40 : 86,421.60 = 54,115.20 : x
  2. Step 2: Convert to fraction form
    57,614.40/86,421.60 = 54,115.20/x
  3. Step 3: Cross multiply
    57,614.40x = 86,421.60 × 54,115.20
  4. Step 4: Simplify right side
    57,614.40x = 4,676,722,168.32
  5. Step 5: Solve for x
    x = 4,676,722,168.32/57,614.40
  6. Step 6: Final answer
    x = 81,172.80

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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.