Home / 91,618.39-126,431.18-51,333.85

Finding the Fourth Proportional to 91,618.39, 126,431.18 and 51,333.85

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Solution

The fourth proportional to 91,618.39, 126,431.18 and 51,333.85 is: 70,839.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,618.39 : 126,431.18 = 51,333.85 : x
  2. Step 2: Convert to fraction form
    91,618.39/126,431.18 = 51,333.85/x
  3. Step 3: Cross multiply
    91,618.39x = 126,431.18 × 51,333.85
  4. Step 4: Simplify right side
    91,618.39x = 6,490,198,972.77
  5. Step 5: Solve for x
    x = 6,490,198,972.77/91,618.39
  6. Step 6: Final answer
    x = 70,839.48

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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.