Home / 91,499.28-126,269.64-51,216.76

Finding the Fourth Proportional to 91,499.28, 126,269.64 and 51,216.76

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Solution

The fourth proportional to 91,499.28, 126,269.64 and 51,216.76 is: 70,679.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,499.28 : 126,269.64 = 51,216.76 : x
  2. Step 2: Convert to fraction form
    91,499.28/126,269.64 = 51,216.76/x
  3. Step 3: Cross multiply
    91,499.28x = 126,269.64 × 51,216.76
  4. Step 4: Simplify right side
    91,499.28x = 6,467,121,847.17
  5. Step 5: Solve for x
    x = 6,467,121,847.17/91,499.28
  6. Step 6: Final answer
    x = 70,679.48

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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.