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Finding the Fourth Proportional to 85,038.96, 127,576.80 and 25,879.26

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Solution

The fourth proportional to 85,038.96, 127,576.80 and 25,879.26 is: 38,824.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,038.96 : 127,576.80 = 25,879.26 : x
  2. Step 2: Convert to fraction form
    85,038.96/127,576.80 = 25,879.26/x
  3. Step 3: Cross multiply
    85,038.96x = 127,576.80 × 25,879.26
  4. Step 4: Simplify right side
    85,038.96x = 3,301,593,177.17
  5. Step 5: Solve for x
    x = 3,301,593,177.17/85,038.96
  6. Step 6: Final answer
    x = 38,824.48

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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.