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Finding the Fourth Proportional to 84,907.80, 127,337.40 and 25,729.20

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Solution

The fourth proportional to 84,907.80, 127,337.40 and 25,729.20 is: 38,586.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,907.80 : 127,337.40 = 25,729.20 : x
  2. Step 2: Convert to fraction form
    84,907.80/127,337.40 = 25,729.20/x
  3. Step 3: Cross multiply
    84,907.80x = 127,337.40 × 25,729.20
  4. Step 4: Simplify right side
    84,907.80x = 3,276,289,432.08
  5. Step 5: Solve for x
    x = 3,276,289,432.08/84,907.80
  6. Step 6: Final answer
    x = 38,586.44

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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.