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Finding the Fourth Proportional to 81,328.68, 112,235.76 and 45,524.88

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Solution

The fourth proportional to 81,328.68, 112,235.76 and 45,524.88 is: 62,825.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,328.68 : 112,235.76 = 45,524.88 : x
  2. Step 2: Convert to fraction form
    81,328.68/112,235.76 = 45,524.88/x
  3. Step 3: Cross multiply
    81,328.68x = 112,235.76 × 45,524.88
  4. Step 4: Simplify right side
    81,328.68x = 5,109,519,505.71
  5. Step 5: Solve for x
    x = 5,109,519,505.71/81,328.68
  6. Step 6: Final answer
    x = 62,825.56

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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.