Home / 84,939.72-127,415.58-25,780.20

Finding the Fourth Proportional to 84,939.72, 127,415.58 and 25,780.20

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Solution

The fourth proportional to 84,939.72, 127,415.58 and 25,780.20 is: 38,672.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,939.72 : 127,415.58 = 25,780.20 : x
  2. Step 2: Convert to fraction form
    84,939.72/127,415.58 = 25,780.20/x
  3. Step 3: Cross multiply
    84,939.72x = 127,415.58 × 25,780.20
  4. Step 4: Simplify right side
    84,939.72x = 3,284,799,135.52
  5. Step 5: Solve for x
    x = 3,284,799,135.52/84,939.72
  6. Step 6: Final answer
    x = 38,672.12

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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.