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Finding the Fourth Proportional to 85,087.74, 127,645.44 and 28,932.87

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Solution

The fourth proportional to 85,087.74, 127,645.44 and 28,932.87 is: 43,404.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,087.74 : 127,645.44 = 28,932.87 : x
  2. Step 2: Convert to fraction form
    85,087.74/127,645.44 = 28,932.87/x
  3. Step 3: Cross multiply
    85,087.74x = 127,645.44 × 28,932.87
  4. Step 4: Simplify right side
    85,087.74x = 3,693,148,921.61
  5. Step 5: Solve for x
    x = 3,693,148,921.61/85,087.74
  6. Step 6: Final answer
    x = 43,404.01

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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.