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Finding the Fourth Proportional to 81,539.47, 112,525.61 and 49,269.61

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Solution

The fourth proportional to 81,539.47, 112,525.61 and 49,269.61 is: 67,992.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,539.47 : 112,525.61 = 49,269.61 : x
  2. Step 2: Convert to fraction form
    81,539.47/112,525.61 = 49,269.61/x
  3. Step 3: Cross multiply
    81,539.47x = 112,525.61 × 49,269.61
  4. Step 4: Simplify right side
    81,539.47x = 5,544,092,919.71
  5. Step 5: Solve for x
    x = 5,544,092,919.71/81,539.47
  6. Step 6: Final answer
    x = 67,992.75

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1.5x scale

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.