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Finding the Fourth Proportional to 70,869.80, 106,304.70 and 63,612.20

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Solution

The fourth proportional to 70,869.80, 106,304.70 and 63,612.20 is: 95,418.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,869.80 : 106,304.70 = 63,612.20 : x
  2. Step 2: Convert to fraction form
    70,869.80/106,304.70 = 63,612.20/x
  3. Step 3: Cross multiply
    70,869.80x = 106,304.70 × 63,612.20
  4. Step 4: Simplify right side
    70,869.80x = 6,762,275,837.34
  5. Step 5: Solve for x
    x = 6,762,275,837.34/70,869.80
  6. Step 6: Final answer
    x = 95,418.30

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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.