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Finding the Fourth Proportional to 68,350.90, 102,477.14 and 42,001.20

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Solution

The fourth proportional to 68,350.90, 102,477.14 and 42,001.20 is: 62,971.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,350.90 : 102,477.14 = 42,001.20 : x
  2. Step 2: Convert to fraction form
    68,350.90/102,477.14 = 42,001.20/x
  3. Step 3: Cross multiply
    68,350.90x = 102,477.14 × 42,001.20
  4. Step 4: Simplify right side
    68,350.90x = 4,304,162,852.57
  5. Step 5: Solve for x
    x = 4,304,162,852.57/68,350.90
  6. Step 6: Final answer
    x = 62,971.56

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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.