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Finding the Fourth Proportional to 84,835.20, 127,252.80 and 43,363.20

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Solution

The fourth proportional to 84,835.20, 127,252.80 and 43,363.20 is: 65,044.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,835.20 : 127,252.80 = 43,363.20 : x
  2. Step 2: Convert to fraction form
    84,835.20/127,252.80 = 43,363.20/x
  3. Step 3: Cross multiply
    84,835.20x = 127,252.80 × 43,363.20
  4. Step 4: Simplify right side
    84,835.20x = 5,518,088,616.96
  5. Step 5: Solve for x
    x = 5,518,088,616.96/84,835.20
  6. Step 6: Final answer
    x = 65,044.80

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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.