Home / 78,463.23-108,278.58-42,653.13

Finding the Fourth Proportional to 78,463.23, 108,278.58 and 42,653.13

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Solution

The fourth proportional to 78,463.23, 108,278.58 and 42,653.13 is: 58,860.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,463.23 : 108,278.58 = 42,653.13 : x
  2. Step 2: Convert to fraction form
    78,463.23/108,278.58 = 42,653.13/x
  3. Step 3: Cross multiply
    78,463.23x = 108,278.58 × 42,653.13
  4. Step 4: Simplify right side
    78,463.23x = 4,618,420,348.96
  5. Step 5: Solve for x
    x = 4,618,420,348.96/78,463.23
  6. Step 6: Final answer
    x = 58,860.95

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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.