Home / 78,675.96-108,574.11-42,867.48

Finding the Fourth Proportional to 78,675.96, 108,574.11 and 42,867.48

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Solution

The fourth proportional to 78,675.96, 108,574.11 and 42,867.48 is: 59,157.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,675.96 : 108,574.11 = 42,867.48 : x
  2. Step 2: Convert to fraction form
    78,675.96/108,574.11 = 42,867.48/x
  3. Step 3: Cross multiply
    78,675.96x = 108,574.11 × 42,867.48
  4. Step 4: Simplify right side
    78,675.96x = 4,654,298,488.94
  5. Step 5: Solve for x
    x = 4,654,298,488.94/78,675.96
  6. Step 6: Final answer
    x = 59,157.82

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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.