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Finding the Fourth Proportional to 68,616.80, 102,848.40 and 29,167.20

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Solution

The fourth proportional to 68,616.80, 102,848.40 and 29,167.20 is: 43,718.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,616.80 : 102,848.40 = 29,167.20 : x
  2. Step 2: Convert to fraction form
    68,616.80/102,848.40 = 29,167.20/x
  3. Step 3: Cross multiply
    68,616.80x = 102,848.40 × 29,167.20
  4. Step 4: Simplify right side
    68,616.80x = 2,999,799,852.48
  5. Step 5: Solve for x
    x = 2,999,799,852.48/68,616.80
  6. Step 6: Final answer
    x = 43,718.15

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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.