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Finding the Fourth Proportional to 84,443.40, 126,665.10 and 34,490.70

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Solution

The fourth proportional to 84,443.40, 126,665.10 and 34,490.70 is: 51,736.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,443.40 : 126,665.10 = 34,490.70 : x
  2. Step 2: Convert to fraction form
    84,443.40/126,665.10 = 34,490.70/x
  3. Step 3: Cross multiply
    84,443.40x = 126,665.10 × 34,490.70
  4. Step 4: Simplify right side
    84,443.40x = 4,368,767,964.57
  5. Step 5: Solve for x
    x = 4,368,767,964.57/84,443.40
  6. Step 6: Final answer
    x = 51,736.05

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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.