Home / 78,463.24-108,279.78-42,653.56

Finding the Fourth Proportional to 78,463.24, 108,279.78 and 42,653.56

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Solution

The fourth proportional to 78,463.24, 108,279.78 and 42,653.56 is: 58,862.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,463.24 : 108,279.78 = 42,653.56 : x
  2. Step 2: Convert to fraction form
    78,463.24/108,279.78 = 42,653.56/x
  3. Step 3: Cross multiply
    78,463.24x = 108,279.78 × 42,653.56
  4. Step 4: Simplify right side
    78,463.24x = 4,618,518,093.02
  5. Step 5: Solve for x
    x = 4,618,518,093.02/78,463.24
  6. Step 6: Final answer
    x = 58,862.19

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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.