Home / 91,539.68-126,327.84-51,255.12

Finding the Fourth Proportional to 91,539.68, 126,327.84 and 51,255.12

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Solution

The fourth proportional to 91,539.68, 126,327.84 and 51,255.12 is: 70,733.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,539.68 : 126,327.84 = 51,255.12 : x
  2. Step 2: Convert to fraction form
    91,539.68/126,327.84 = 51,255.12/x
  3. Step 3: Cross multiply
    91,539.68x = 126,327.84 × 51,255.12
  4. Step 4: Simplify right side
    91,539.68x = 6,474,948,598.54
  5. Step 5: Solve for x
    x = 6,474,948,598.54/91,539.68
  6. Step 6: Final answer
    x = 70,733.79

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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.