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Finding the Fourth Proportional to 85,072.52, 127,615.86 and 25,908.71

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Solution

The fourth proportional to 85,072.52, 127,615.86 and 25,908.71 is: 38,865.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,072.52 : 127,615.86 = 25,908.71 : x
  2. Step 2: Convert to fraction form
    85,072.52/127,615.86 = 25,908.71/x
  3. Step 3: Cross multiply
    85,072.52x = 127,615.86 × 25,908.71
  4. Step 4: Simplify right side
    85,072.52x = 3,306,361,670.06
  5. Step 5: Solve for x
    x = 3,306,361,670.06/85,072.52
  6. Step 6: Final answer
    x = 38,865.22

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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.