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Finding the Fourth Proportional to 70,898.97, 106,348.37 and 18,308.19

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Solution

The fourth proportional to 70,898.97, 106,348.37 and 18,308.19 is: 27,462.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,898.97 : 106,348.37 = 18,308.19 : x
  2. Step 2: Convert to fraction form
    70,898.97/106,348.37 = 18,308.19/x
  3. Step 3: Cross multiply
    70,898.97x = 106,348.37 × 18,308.19
  4. Step 4: Simplify right side
    70,898.97x = 1,947,046,072.61
  5. Step 5: Solve for x
    x = 1,947,046,072.61/70,898.97
  6. Step 6: Final answer
    x = 27,462.26

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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.