Home / 91,899.36-126,869.28-61,842.72

Finding the Fourth Proportional to 91,899.36, 126,869.28 and 61,842.72

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Solution

The fourth proportional to 91,899.36, 126,869.28 and 61,842.72 is: 85,375.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,899.36 : 126,869.28 = 61,842.72 : x
  2. Step 2: Convert to fraction form
    91,899.36/126,869.28 = 61,842.72/x
  3. Step 3: Cross multiply
    91,899.36x = 126,869.28 × 61,842.72
  4. Step 4: Simplify right side
    91,899.36x = 7,845,941,359.64
  5. Step 5: Solve for x
    x = 7,845,941,359.64/91,899.36
  6. Step 6: Final answer
    x = 85,375.36

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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.