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Finding the Fourth Proportional to 78,991.84, 108,993.65 and 44,999.58

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Solution

The fourth proportional to 78,991.84, 108,993.65 and 44,999.58 is: 62,090.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,991.84 : 108,993.65 = 44,999.58 : x
  2. Step 2: Convert to fraction form
    78,991.84/108,993.65 = 44,999.58/x
  3. Step 3: Cross multiply
    78,991.84x = 108,993.65 × 44,999.58
  4. Step 4: Simplify right side
    78,991.84x = 4,904,668,472.67
  5. Step 5: Solve for x
    x = 4,904,668,472.67/78,991.84
  6. Step 6: Final answer
    x = 62,090.83

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1.5x scale

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.