Home / 91,724.45-126,581.02-55,420.86

Finding the Fourth Proportional to 91,724.45, 126,581.02 and 55,420.86

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Solution

The fourth proportional to 91,724.45, 126,581.02 and 55,420.86 is: 76,481.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,724.45 : 126,581.02 = 55,420.86 : x
  2. Step 2: Convert to fraction form
    91,724.45/126,581.02 = 55,420.86/x
  3. Step 3: Cross multiply
    91,724.45x = 126,581.02 × 55,420.86
  4. Step 4: Simplify right side
    91,724.45x = 7,015,228,534.25
  5. Step 5: Solve for x
    x = 7,015,228,534.25/91,724.45
  6. Step 6: Final answer
    x = 76,481.55

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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.