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Finding the Fourth Proportional to 84,857.70, 127,254.15 and 25,673.70

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Solution

The fourth proportional to 84,857.70, 127,254.15 and 25,673.70 is: 38,500.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,857.70 : 127,254.15 = 25,673.70 : x
  2. Step 2: Convert to fraction form
    84,857.70/127,254.15 = 25,673.70/x
  3. Step 3: Cross multiply
    84,857.70x = 127,254.15 × 25,673.70
  4. Step 4: Simplify right side
    84,857.70x = 3,267,084,870.86
  5. Step 5: Solve for x
    x = 3,267,084,870.86/84,857.70
  6. Step 6: Final answer
    x = 38,500.75

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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.