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Finding the Fourth Proportional to 70,888.80, 106,449.36 and 64,122.72

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Solution

The fourth proportional to 70,888.80, 106,449.36 and 64,122.72 is: 96,289.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,888.80 : 106,449.36 = 64,122.72 : x
  2. Step 2: Convert to fraction form
    70,888.80/106,449.36 = 64,122.72/x
  3. Step 3: Cross multiply
    70,888.80x = 106,449.36 × 64,122.72
  4. Step 4: Simplify right side
    70,888.80x = 6,825,822,505.46
  5. Step 5: Solve for x
    x = 6,825,822,505.46/70,888.80
  6. Step 6: Final answer
    x = 96,289.15

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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.