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Finding the Fourth Proportional to 70,326.92, 105,443.51 and 38,751.81

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Solution

The fourth proportional to 70,326.92, 105,443.51 and 38,751.81 is: 58,101.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,326.92 : 105,443.51 = 38,751.81 : x
  2. Step 2: Convert to fraction form
    70,326.92/105,443.51 = 38,751.81/x
  3. Step 3: Cross multiply
    70,326.92x = 105,443.51 × 38,751.81
  4. Step 4: Simplify right side
    70,326.92x = 4,086,126,671.49
  5. Step 5: Solve for x
    x = 4,086,126,671.49/70,326.92
  6. Step 6: Final answer
    x = 58,101.89

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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.