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Finding the Fourth Proportional to 84,690.30, 127,040.30 and 25,519.80

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Solution

The fourth proportional to 84,690.30, 127,040.30 and 25,519.80 is: 38,281.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,690.30 : 127,040.30 = 25,519.80 : x
  2. Step 2: Convert to fraction form
    84,690.30/127,040.30 = 25,519.80/x
  3. Step 3: Cross multiply
    84,690.30x = 127,040.30 × 25,519.80
  4. Step 4: Simplify right side
    84,690.30x = 3,242,043,047.94
  5. Step 5: Solve for x
    x = 3,242,043,047.94/84,690.30
  6. Step 6: Final answer
    x = 38,281.16

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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.