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Finding the Fourth Proportional to 84,992.10, 127,488.15 and 76,535.70

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Solution

The fourth proportional to 84,992.10, 127,488.15 and 76,535.70 is: 114,803.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,992.10 : 127,488.15 = 76,535.70 : x
  2. Step 2: Convert to fraction form
    84,992.10/127,488.15 = 76,535.70/x
  3. Step 3: Cross multiply
    84,992.10x = 127,488.15 × 76,535.70
  4. Step 4: Simplify right side
    84,992.10x = 9,757,394,801.96
  5. Step 5: Solve for x
    x = 9,757,394,801.96/84,992.10
  6. Step 6: Final answer
    x = 114,803.55

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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.