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Finding the Fourth Proportional to 81,320.67, 121,980.24 and 63,566.24

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Solution

The fourth proportional to 81,320.67, 121,980.24 and 63,566.24 is: 95,348.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,320.67 : 121,980.24 = 63,566.24 : x
  2. Step 2: Convert to fraction form
    81,320.67/121,980.24 = 63,566.24/x
  3. Step 3: Cross multiply
    81,320.67x = 121,980.24 × 63,566.24
  4. Step 4: Simplify right side
    81,320.67x = 7,753,824,601.20
  5. Step 5: Solve for x
    x = 7,753,824,601.20/81,320.67
  6. Step 6: Final answer
    x = 95,348.75

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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.