Home / 78,464.24-108,281.16-42,654.56

Finding the Fourth Proportional to 78,464.24, 108,281.16 and 42,654.56

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Solution

The fourth proportional to 78,464.24, 108,281.16 and 42,654.56 is: 58,863.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,464.24 : 108,281.16 = 42,654.56 : x
  2. Step 2: Convert to fraction form
    78,464.24/108,281.16 = 42,654.56/x
  3. Step 3: Cross multiply
    78,464.24x = 108,281.16 × 42,654.56
  4. Step 4: Simplify right side
    78,464.24x = 4,618,685,236.09
  5. Step 5: Solve for x
    x = 4,618,685,236.09/78,464.24
  6. Step 6: Final answer
    x = 58,863.57

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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.