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Finding the Fourth Proportional to 70,517.52, 105,747.12 and 29,973.78

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Solution

The fourth proportional to 70,517.52, 105,747.12 and 29,973.78 is: 44,948.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,517.52 : 105,747.12 = 29,973.78 : x
  2. Step 2: Convert to fraction form
    70,517.52/105,747.12 = 29,973.78/x
  3. Step 3: Cross multiply
    70,517.52x = 105,747.12 × 29,973.78
  4. Step 4: Simplify right side
    70,517.52x = 3,169,640,910.51
  5. Step 5: Solve for x
    x = 3,169,640,910.51/70,517.52
  6. Step 6: Final answer
    x = 44,948.28

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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.