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Finding the Fourth Proportional to 85,073.57, 127,628.84 and 25,907.72

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Solution

The fourth proportional to 85,073.57, 127,628.84 and 25,907.72 is: 38,867.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,073.57 : 127,628.84 = 25,907.72 : x
  2. Step 2: Convert to fraction form
    85,073.57/127,628.84 = 25,907.72/x
  3. Step 3: Cross multiply
    85,073.57x = 127,628.84 × 25,907.72
  4. Step 4: Simplify right side
    85,073.57x = 3,306,572,121.11
  5. Step 5: Solve for x
    x = 3,306,572,121.11/85,073.57
  6. Step 6: Final answer
    x = 38,867.21

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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.