Home / 84,905.12-127,380.72-25,742.72

Finding the Fourth Proportional to 84,905.12, 127,380.72 and 25,742.72

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Solution

The fourth proportional to 84,905.12, 127,380.72 and 25,742.72 is: 38,621.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,905.12 : 127,380.72 = 25,742.72 : x
  2. Step 2: Convert to fraction form
    84,905.12/127,380.72 = 25,742.72/x
  3. Step 3: Cross multiply
    84,905.12x = 127,380.72 × 25,742.72
  4. Step 4: Simplify right side
    84,905.12x = 3,279,126,208.36
  5. Step 5: Solve for x
    x = 3,279,126,208.36/84,905.12
  6. Step 6: Final answer
    x = 38,621.07

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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.