Home / 91,071.28-125,670.72-50,781.88

Finding the Fourth Proportional to 91,071.28, 125,670.72 and 50,781.88

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Solution

The fourth proportional to 91,071.28, 125,670.72 and 50,781.88 is: 70,074.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,071.28 : 125,670.72 = 50,781.88 : x
  2. Step 2: Convert to fraction form
    91,071.28/125,670.72 = 50,781.88/x
  3. Step 3: Cross multiply
    91,071.28x = 125,670.72 × 50,781.88
  4. Step 4: Simplify right side
    91,071.28x = 6,381,795,422.55
  5. Step 5: Solve for x
    x = 6,381,795,422.55/91,071.28
  6. Step 6: Final answer
    x = 70,074.73

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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.