Home / 78,716.10-108,629.30-42,906.04

Finding the Fourth Proportional to 78,716.10, 108,629.30 and 42,906.04

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Solution

The fourth proportional to 78,716.10, 108,629.30 and 42,906.04 is: 59,210.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,716.10 : 108,629.30 = 42,906.04 : x
  2. Step 2: Convert to fraction form
    78,716.10/108,629.30 = 42,906.04/x
  3. Step 3: Cross multiply
    78,716.10x = 108,629.30 × 42,906.04
  4. Step 4: Simplify right side
    78,716.10x = 4,660,852,926.66
  5. Step 5: Solve for x
    x = 4,660,852,926.66/78,716.10
  6. Step 6: Final answer
    x = 59,210.92

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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.