Home / 91,780.16-126,657.76-51,502.56

Finding the Fourth Proportional to 91,780.16, 126,657.76 and 51,502.56

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Solution

The fourth proportional to 91,780.16, 126,657.76 and 51,502.56 is: 71,074.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,780.16 : 126,657.76 = 51,502.56 : x
  2. Step 2: Convert to fraction form
    91,780.16/126,657.76 = 51,502.56/x
  3. Step 3: Cross multiply
    91,780.16x = 126,657.76 × 51,502.56
  4. Step 4: Simplify right side
    91,780.16x = 6,523,198,883.87
  5. Step 5: Solve for x
    x = 6,523,198,883.87/91,780.16
  6. Step 6: Final answer
    x = 71,074.17

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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.