Home / 81,321.67-121,981.74-63,567.24

Finding the Fourth Proportional to 81,321.67, 121,981.74 and 63,567.24

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Solution

The fourth proportional to 81,321.67, 121,981.74 and 63,567.24 is: 95,350.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,321.67 : 121,981.74 = 63,567.24 : x
  2. Step 2: Convert to fraction form
    81,321.67/121,981.74 = 63,567.24/x
  3. Step 3: Cross multiply
    81,321.67x = 121,981.74 × 63,567.24
  4. Step 4: Simplify right side
    81,321.67x = 7,754,042,542.20
  5. Step 5: Solve for x
    x = 7,754,042,542.20/81,321.67
  6. Step 6: Final answer
    x = 95,350.26

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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.