Home / 78,326.26-108,087.12-42,515.35

Finding the Fourth Proportional to 78,326.26, 108,087.12 and 42,515.35

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Solution

The fourth proportional to 78,326.26, 108,087.12 and 42,515.35 is: 58,669.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,326.26 : 108,087.12 = 42,515.35 : x
  2. Step 2: Convert to fraction form
    78,326.26/108,087.12 = 42,515.35/x
  3. Step 3: Cross multiply
    78,326.26x = 108,087.12 × 42,515.35
  4. Step 4: Simplify right side
    78,326.26x = 4,595,361,737.29
  5. Step 5: Solve for x
    x = 4,595,361,737.29/78,326.26
  6. Step 6: Final answer
    x = 58,669.49

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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.