Home / 78,694.11-108,599.13-42,884.15

Finding the Fourth Proportional to 78,694.11, 108,599.13 and 42,884.15

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Solution

The fourth proportional to 78,694.11, 108,599.13 and 42,884.15 is: 59,180.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,694.11 : 108,599.13 = 42,884.15 : x
  2. Step 2: Convert to fraction form
    78,694.11/108,599.13 = 42,884.15/x
  3. Step 3: Cross multiply
    78,694.11x = 108,599.13 × 42,884.15
  4. Step 4: Simplify right side
    78,694.11x = 4,657,180,837.79
  5. Step 5: Solve for x
    x = 4,657,180,837.79/78,694.11
  6. Step 6: Final answer
    x = 59,180.81

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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.