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Finding the Fourth Proportional to 78,897.62, 108,879.58 and 43,088.68

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Solution

The fourth proportional to 78,897.62, 108,879.58 and 43,088.68 is: 59,462.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,897.62 : 108,879.58 = 43,088.68 : x
  2. Step 2: Convert to fraction form
    78,897.62/108,879.58 = 43,088.68/x
  3. Step 3: Cross multiply
    78,897.62x = 108,879.58 × 43,088.68
  4. Step 4: Simplify right side
    78,897.62x = 4,691,477,381.15
  5. Step 5: Solve for x
    x = 4,691,477,381.15/78,897.62
  6. Step 6: Final answer
    x = 59,462.85

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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.