Home / 78,677.56-108,573.66-42,867.84

Finding the Fourth Proportional to 78,677.56, 108,573.66 and 42,867.84

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Solution

The fourth proportional to 78,677.56, 108,573.66 and 42,867.84 is: 59,156.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,677.56 : 108,573.66 = 42,867.84 : x
  2. Step 2: Convert to fraction form
    78,677.56/108,573.66 = 42,867.84/x
  3. Step 3: Cross multiply
    78,677.56x = 108,573.66 × 42,867.84
  4. Step 4: Simplify right side
    78,677.56x = 4,654,318,285.09
  5. Step 5: Solve for x
    x = 4,654,318,285.09/78,677.56
  6. Step 6: Final answer
    x = 59,156.87

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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.