Home / 91,819.76-126,657.60-57,774.56

Finding the Fourth Proportional to 91,819.76, 126,657.60 and 57,774.56

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Solution

The fourth proportional to 91,819.76, 126,657.60 and 57,774.56 is: 79,695.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,819.76 : 126,657.60 = 57,774.56 : x
  2. Step 2: Convert to fraction form
    91,819.76/126,657.60 = 57,774.56/x
  3. Step 3: Cross multiply
    91,819.76x = 126,657.60 × 57,774.56
  4. Step 4: Simplify right side
    91,819.76x = 7,317,587,110.66
  5. Step 5: Solve for x
    x = 7,317,587,110.66/91,819.76
  6. Step 6: Final answer
    x = 79,695.12

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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.