Home / 84,715.20-127,031.76-25,539.84

Finding the Fourth Proportional to 84,715.20, 127,031.76 and 25,539.84

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Solution

The fourth proportional to 84,715.20, 127,031.76 and 25,539.84 is: 38,297.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,715.20 : 127,031.76 = 25,539.84 : x
  2. Step 2: Convert to fraction form
    84,715.20/127,031.76 = 25,539.84/x
  3. Step 3: Cross multiply
    84,715.20x = 127,031.76 × 25,539.84
  4. Step 4: Simplify right side
    84,715.20x = 3,244,370,825.32
  5. Step 5: Solve for x
    x = 3,244,370,825.32/84,715.20
  6. Step 6: Final answer
    x = 38,297.39

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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.