Home / 78,823.58-108,778.85-43,015.89

Finding the Fourth Proportional to 78,823.58, 108,778.85 and 43,015.89

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Solution

The fourth proportional to 78,823.58, 108,778.85 and 43,015.89 is: 59,363.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,823.58 : 108,778.85 = 43,015.89 : x
  2. Step 2: Convert to fraction form
    78,823.58/108,778.85 = 43,015.89/x
  3. Step 3: Cross multiply
    78,823.58x = 108,778.85 × 43,015.89
  4. Step 4: Simplify right side
    78,823.58x = 4,679,218,830.85
  5. Step 5: Solve for x
    x = 4,679,218,830.85/78,823.58
  6. Step 6: Final answer
    x = 59,363.19

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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.