Home / 112,761.48-155,609.06-61,773.78

Finding the Fourth Proportional to 112,761.48, 155,609.06 and 61,773.78

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Solution

The fourth proportional to 112,761.48, 155,609.06 and 61,773.78 is: 85,246.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,761.48 : 155,609.06 = 61,773.78 : x
  2. Step 2: Convert to fraction form
    112,761.48/155,609.06 = 61,773.78/x
  3. Step 3: Cross multiply
    112,761.48x = 155,609.06 × 61,773.78
  4. Step 4: Simplify right side
    112,761.48x = 9,612,559,838.45
  5. Step 5: Solve for x
    x = 9,612,559,838.45/112,761.48
  6. Step 6: Final answer
    x = 85,246.84

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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.