Home / 78,476.18-108,299.25-42,668.66

Finding the Fourth Proportional to 78,476.18, 108,299.25 and 42,668.66

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Solution

The fourth proportional to 78,476.18, 108,299.25 and 42,668.66 is: 58,883.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,476.18 : 108,299.25 = 42,668.66 : x
  2. Step 2: Convert to fraction form
    78,476.18/108,299.25 = 42,668.66/x
  3. Step 3: Cross multiply
    78,476.18x = 108,299.25 × 42,668.66
  4. Step 4: Simplify right side
    78,476.18x = 4,620,983,876.51
  5. Step 5: Solve for x
    x = 4,620,983,876.51/78,476.18
  6. Step 6: Final answer
    x = 58,883.90

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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.