Home / 81,396.64-112,330.24-45,589.92

Finding the Fourth Proportional to 81,396.64, 112,330.24 and 45,589.92

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Solution

The fourth proportional to 81,396.64, 112,330.24 and 45,589.92 is: 62,915.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,396.64 : 112,330.24 = 45,589.92 : x
  2. Step 2: Convert to fraction form
    81,396.64/112,330.24 = 45,589.92/x
  3. Step 3: Cross multiply
    81,396.64x = 112,330.24 × 45,589.92
  4. Step 4: Simplify right side
    81,396.64x = 5,121,126,655.18
  5. Step 5: Solve for x
    x = 5,121,126,655.18/81,396.64
  6. Step 6: Final answer
    x = 62,915.70

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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.