Home / 78,548.46-108,396.38-42,738.61

Finding the Fourth Proportional to 78,548.46, 108,396.38 and 42,738.61

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Solution

The fourth proportional to 78,548.46, 108,396.38 and 42,738.61 is: 58,979.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,548.46 : 108,396.38 = 42,738.61 : x
  2. Step 2: Convert to fraction form
    78,548.46/108,396.38 = 42,738.61/x
  3. Step 3: Cross multiply
    78,548.46x = 108,396.38 × 42,738.61
  4. Step 4: Simplify right side
    78,548.46x = 4,632,710,713.79
  5. Step 5: Solve for x
    x = 4,632,710,713.79/78,548.46
  6. Step 6: Final answer
    x = 58,979.01

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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.