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Finding the Fourth Proportional to 70,904.38, 106,398.06 and 39,340.83

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Solution

The fourth proportional to 70,904.38, 106,398.06 and 39,340.83 is: 59,034.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,904.38 : 106,398.06 = 39,340.83 : x
  2. Step 2: Convert to fraction form
    70,904.38/106,398.06 = 39,340.83/x
  3. Step 3: Cross multiply
    70,904.38x = 106,398.06 × 39,340.83
  4. Step 4: Simplify right side
    70,904.38x = 4,185,787,990.79
  5. Step 5: Solve for x
    x = 4,185,787,990.79/70,904.38
  6. Step 6: Final answer
    x = 59,034.27

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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.