Home / 91,047.78-136,500.39-57,761.64

Finding the Fourth Proportional to 91,047.78, 136,500.39 and 57,761.64

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Solution

The fourth proportional to 91,047.78, 136,500.39 and 57,761.64 is: 86,597.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,047.78 : 136,500.39 = 57,761.64 : x
  2. Step 2: Convert to fraction form
    91,047.78/136,500.39 = 57,761.64/x
  3. Step 3: Cross multiply
    91,047.78x = 136,500.39 × 57,761.64
  4. Step 4: Simplify right side
    91,047.78x = 7,884,486,387.04
  5. Step 5: Solve for x
    x = 7,884,486,387.04/91,047.78
  6. Step 6: Final answer
    x = 86,597.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.