Home / 91,508.66-126,280.53-51,221.78

Finding the Fourth Proportional to 91,508.66, 126,280.53 and 51,221.78

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Solution

The fourth proportional to 91,508.66, 126,280.53 and 51,221.78 is: 70,685.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,508.66 : 126,280.53 = 51,221.78 : x
  2. Step 2: Convert to fraction form
    91,508.66/126,280.53 = 51,221.78/x
  3. Step 3: Cross multiply
    91,508.66x = 126,280.53 × 51,221.78
  4. Step 4: Simplify right side
    91,508.66x = 6,468,313,525.94
  5. Step 5: Solve for x
    x = 6,468,313,525.94/91,508.66
  6. Step 6: Final answer
    x = 70,685.26

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1.5x scale

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.