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Finding the Fourth Proportional to 78,919.12, 108,908.04 and 44,929

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Solution

The fourth proportional to 78,919.12, 108,908.04 and 44,929 is: 62,001.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,919.12 : 108,908.04 = 44,929 : x
  2. Step 2: Convert to fraction form
    78,919.12/108,908.04 = 44,929/x
  3. Step 3: Cross multiply
    78,919.12x = 108,908.04 × 44,929
  4. Step 4: Simplify right side
    78,919.12x = 4,893,129,329.16
  5. Step 5: Solve for x
    x = 4,893,129,329.16/78,919.12
  6. Step 6: Final answer
    x = 62,001.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.