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Finding the Fourth Proportional to 81,599.88, 112,565.94 and 54,422.76

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Solution

The fourth proportional to 81,599.88, 112,565.94 and 54,422.76 is: 75,075.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,599.88 : 112,565.94 = 54,422.76 : x
  2. Step 2: Convert to fraction form
    81,599.88/112,565.94 = 54,422.76/x
  3. Step 3: Cross multiply
    81,599.88x = 112,565.94 × 54,422.76
  4. Step 4: Simplify right side
    81,599.88x = 6,126,149,136.79
  5. Step 5: Solve for x
    x = 6,126,149,136.79/81,599.88
  6. Step 6: Final answer
    x = 75,075.47

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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.