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Finding the Fourth Proportional to 78,809.30, 108,759.97 and 44,820.89

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Solution

The fourth proportional to 78,809.30, 108,759.97 and 44,820.89 is: 61,854.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,809.30 : 108,759.97 = 44,820.89 : x
  2. Step 2: Convert to fraction form
    78,809.30/108,759.97 = 44,820.89/x
  3. Step 3: Cross multiply
    78,809.30x = 108,759.97 × 44,820.89
  4. Step 4: Simplify right side
    78,809.30x = 4,874,718,931.51
  5. Step 5: Solve for x
    x = 4,874,718,931.51/78,809.30
  6. Step 6: Final answer
    x = 61,854.61

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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.