Home / 90,971.76-125,549.28-55,170.84

Finding the Fourth Proportional to 90,971.76, 125,549.28 and 55,170.84

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Solution

The fourth proportional to 90,971.76, 125,549.28 and 55,170.84 is: 76,140.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,971.76 : 125,549.28 = 55,170.84 : x
  2. Step 2: Convert to fraction form
    90,971.76/125,549.28 = 55,170.84/x
  3. Step 3: Cross multiply
    90,971.76x = 125,549.28 × 55,170.84
  4. Step 4: Simplify right side
    90,971.76x = 6,926,659,239.00
  5. Step 5: Solve for x
    x = 6,926,659,239.00/90,971.76
  6. Step 6: Final answer
    x = 76,140.76

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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.