Home / 84,865.20-127,265.40-25,681.20

Finding the Fourth Proportional to 84,865.20, 127,265.40 and 25,681.20

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Solution

The fourth proportional to 84,865.20, 127,265.40 and 25,681.20 is: 38,512.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,865.20 : 127,265.40 = 25,681.20 : x
  2. Step 2: Convert to fraction form
    84,865.20/127,265.40 = 25,681.20/x
  3. Step 3: Cross multiply
    84,865.20x = 127,265.40 × 25,681.20
  4. Step 4: Simplify right side
    84,865.20x = 3,268,328,190.48
  5. Step 5: Solve for x
    x = 3,268,328,190.48/84,865.20
  6. Step 6: Final answer
    x = 38,512.00

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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.