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Finding the Fourth Proportional to 83,637.44, 125,456.88 and 21,308

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Solution

The fourth proportional to 83,637.44, 125,456.88 and 21,308 is: 31,962.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,637.44 : 125,456.88 = 21,308 : x
  2. Step 2: Convert to fraction form
    83,637.44/125,456.88 = 21,308/x
  3. Step 3: Cross multiply
    83,637.44x = 125,456.88 × 21,308
  4. Step 4: Simplify right side
    83,637.44x = 2,673,235,199.04
  5. Step 5: Solve for x
    x = 2,673,235,199.04/83,637.44
  6. Step 6: Final answer
    x = 31,962.18

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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.