Home / 81,565.12-112,440.72-57,649.60

Finding the Fourth Proportional to 81,565.12, 112,440.72 and 57,649.60

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Solution

The fourth proportional to 81,565.12, 112,440.72 and 57,649.60 is: 79,472.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,565.12 : 112,440.72 = 57,649.60 : x
  2. Step 2: Convert to fraction form
    81,565.12/112,440.72 = 57,649.60/x
  3. Step 3: Cross multiply
    81,565.12x = 112,440.72 × 57,649.60
  4. Step 4: Simplify right side
    81,565.12x = 6,482,162,531.71
  5. Step 5: Solve for x
    x = 6,482,162,531.71/81,565.12
  6. Step 6: Final answer
    x = 79,472.24

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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.