Home / 91,440.39-126,184.80-51,153.28

Finding the Fourth Proportional to 91,440.39, 126,184.80 and 51,153.28

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Solution

The fourth proportional to 91,440.39, 126,184.80 and 51,153.28 is: 70,589.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,440.39 : 126,184.80 = 51,153.28 : x
  2. Step 2: Convert to fraction form
    91,440.39/126,184.80 = 51,153.28/x
  3. Step 3: Cross multiply
    91,440.39x = 126,184.80 × 51,153.28
  4. Step 4: Simplify right side
    91,440.39x = 6,454,766,090.68
  5. Step 5: Solve for x
    x = 6,454,766,090.68/91,440.39
  6. Step 6: Final answer
    x = 70,589.88

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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.