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Finding the Fourth Proportional to 70,930.80, 106,398.05 and 18,340.13

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Solution

The fourth proportional to 70,930.80, 106,398.05 and 18,340.13 is: 27,510.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,930.80 : 106,398.05 = 18,340.13 : x
  2. Step 2: Convert to fraction form
    70,930.80/106,398.05 = 18,340.13/x
  3. Step 3: Cross multiply
    70,930.80x = 106,398.05 × 18,340.13
  4. Step 4: Simplify right side
    70,930.80x = 1,951,353,445.06
  5. Step 5: Solve for x
    x = 1,951,353,445.06/70,930.80
  6. Step 6: Final answer
    x = 27,510.66

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1.5x scale

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.