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Finding the Fourth Proportional to 85,073.26, 127,615.14 and 25,913.28

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Solution

The fourth proportional to 85,073.26, 127,615.14 and 25,913.28 is: 38,871.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,073.26 : 127,615.14 = 25,913.28 : x
  2. Step 2: Convert to fraction form
    85,073.26/127,615.14 = 25,913.28/x
  3. Step 3: Cross multiply
    85,073.26x = 127,615.14 × 25,913.28
  4. Step 4: Simplify right side
    85,073.26x = 3,306,926,855.06
  5. Step 5: Solve for x
    x = 3,306,926,855.06/85,073.26
  6. Step 6: Final answer
    x = 38,871.52

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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.