Home / 85,080.32-127,636-25,909.28

Finding the Fourth Proportional to 85,080.32, 127,636 and 25,909.28

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Solution

The fourth proportional to 85,080.32, 127,636 and 25,909.28 is: 38,868.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,080.32 : 127,636 = 25,909.28 : x
  2. Step 2: Convert to fraction form
    85,080.32/127,636 = 25,909.28/x
  3. Step 3: Cross multiply
    85,080.32x = 127,636 × 25,909.28
  4. Step 4: Simplify right side
    85,080.32x = 3,306,956,862.08
  5. Step 5: Solve for x
    x = 3,306,956,862.08/85,080.32
  6. Step 6: Final answer
    x = 38,868.65

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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.