Home / 78,977.30-108,988.40-43,167.29

Finding the Fourth Proportional to 78,977.30, 108,988.40 and 43,167.29

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Solution

The fourth proportional to 78,977.30, 108,988.40 and 43,167.29 is: 59,570.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,977.30 : 108,988.40 = 43,167.29 : x
  2. Step 2: Convert to fraction form
    78,977.30/108,988.40 = 43,167.29/x
  3. Step 3: Cross multiply
    78,977.30x = 108,988.40 × 43,167.29
  4. Step 4: Simplify right side
    78,977.30x = 4,704,733,432.41
  5. Step 5: Solve for x
    x = 4,704,733,432.41/78,977.30
  6. Step 6: Final answer
    x = 59,570.71

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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.