Home / 78,815.94-108,806.13-60,870.66

Finding the Fourth Proportional to 78,815.94, 108,806.13 and 60,870.66

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Solution

The fourth proportional to 78,815.94, 108,806.13 and 60,870.66 is: 84,032.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,815.94 : 108,806.13 = 60,870.66 : x
  2. Step 2: Convert to fraction form
    78,815.94/108,806.13 = 60,870.66/x
  3. Step 3: Cross multiply
    78,815.94x = 108,806.13 × 60,870.66
  4. Step 4: Simplify right side
    78,815.94x = 6,623,100,945.15
  5. Step 5: Solve for x
    x = 6,623,100,945.15/78,815.94
  6. Step 6: Final answer
    x = 84,032.51

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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.