Home / 72,132.72-99,442.80-62,167.20

Finding the Fourth Proportional to 72,132.72, 99,442.80 and 62,167.20

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Solution

The fourth proportional to 72,132.72, 99,442.80 and 62,167.20 is: 85,704.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,132.72 : 99,442.80 = 62,167.20 : x
  2. Step 2: Convert to fraction form
    72,132.72/99,442.80 = 62,167.20/x
  3. Step 3: Cross multiply
    72,132.72x = 99,442.80 × 62,167.20
  4. Step 4: Simplify right side
    72,132.72x = 6,182,080,436.16
  5. Step 5: Solve for x
    x = 6,182,080,436.16/72,132.72
  6. Step 6: Final answer
    x = 85,704.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.