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Finding the Fourth Proportional to 84,898.30, 127,201.65 and 55,300.90

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Solution

The fourth proportional to 84,898.30, 127,201.65 and 55,300.90 is: 82,856.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,898.30 : 127,201.65 = 55,300.90 : x
  2. Step 2: Convert to fraction form
    84,898.30/127,201.65 = 55,300.90/x
  3. Step 3: Cross multiply
    84,898.30x = 127,201.65 × 55,300.90
  4. Step 4: Simplify right side
    84,898.30x = 7,034,365,726.49
  5. Step 5: Solve for x
    x = 7,034,365,726.49/84,898.30
  6. Step 6: Final answer
    x = 82,856.38

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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.