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Finding the Fourth Proportional to 81,576.91, 112,575.47 and 45,766.91

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Solution

The fourth proportional to 81,576.91, 112,575.47 and 45,766.91 is: 63,157.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,576.91 : 112,575.47 = 45,766.91 : x
  2. Step 2: Convert to fraction form
    81,576.91/112,575.47 = 45,766.91/x
  3. Step 3: Cross multiply
    81,576.91x = 112,575.47 × 45,766.91
  4. Step 4: Simplify right side
    81,576.91x = 5,152,230,611.99
  5. Step 5: Solve for x
    x = 5,152,230,611.99/81,576.91
  6. Step 6: Final answer
    x = 63,157.95

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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.