Home / 78,507.22-108,338.91-42,696.46

Finding the Fourth Proportional to 78,507.22, 108,338.91 and 42,696.46

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Solution

The fourth proportional to 78,507.22, 108,338.91 and 42,696.46 is: 58,920.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,507.22 : 108,338.91 = 42,696.46 : x
  2. Step 2: Convert to fraction form
    78,507.22/108,338.91 = 42,696.46/x
  3. Step 3: Cross multiply
    78,507.22x = 108,338.91 × 42,696.46
  4. Step 4: Simplify right side
    78,507.22x = 4,625,687,937.26
  5. Step 5: Solve for x
    x = 4,625,687,937.26/78,507.22
  6. Step 6: Final answer
    x = 58,920.54

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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.