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Finding the Fourth Proportional to 84,934.20, 127,368.90 and 25,750.20

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Solution

The fourth proportional to 84,934.20, 127,368.90 and 25,750.20 is: 38,615.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,934.20 : 127,368.90 = 25,750.20 : x
  2. Step 2: Convert to fraction form
    84,934.20/127,368.90 = 25,750.20/x
  3. Step 3: Cross multiply
    84,934.20x = 127,368.90 × 25,750.20
  4. Step 4: Simplify right side
    84,934.20x = 3,279,774,648.78
  5. Step 5: Solve for x
    x = 3,279,774,648.78/84,934.20
  6. Step 6: Final answer
    x = 38,615.48

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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.