Home / 78,965.13-108,973.32-43,156.65

Finding the Fourth Proportional to 78,965.13, 108,973.32 and 43,156.65

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Solution

The fourth proportional to 78,965.13, 108,973.32 and 43,156.65 is: 59,556.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,965.13 : 108,973.32 = 43,156.65 : x
  2. Step 2: Convert to fraction form
    78,965.13/108,973.32 = 43,156.65/x
  3. Step 3: Cross multiply
    78,965.13x = 108,973.32 × 43,156.65
  4. Step 4: Simplify right side
    78,965.13x = 4,702,923,430.58
  5. Step 5: Solve for x
    x = 4,702,923,430.58/78,965.13
  6. Step 6: Final answer
    x = 59,556.96

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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.