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Finding the Fourth Proportional to 84,438, 126,693.48 and 44,983.92

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Solution

The fourth proportional to 84,438, 126,693.48 and 44,983.92 is: 67,495.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,438 : 126,693.48 = 44,983.92 : x
  2. Step 2: Convert to fraction form
    84,438/126,693.48 = 44,983.92/x
  3. Step 3: Cross multiply
    84,438x = 126,693.48 × 44,983.92
  4. Step 4: Simplify right side
    84,438x = 5,699,169,368.84
  5. Step 5: Solve for x
    x = 5,699,169,368.84/84,438
  6. Step 6: Final answer
    x = 67,495.31

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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.