Home / 77,956.96-107,580.12-42,147.04

Finding the Fourth Proportional to 77,956.96, 107,580.12 and 42,147.04

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Solution

The fourth proportional to 77,956.96, 107,580.12 and 42,147.04 is: 58,162.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,956.96 : 107,580.12 = 42,147.04 : x
  2. Step 2: Convert to fraction form
    77,956.96/107,580.12 = 42,147.04/x
  3. Step 3: Cross multiply
    77,956.96x = 107,580.12 × 42,147.04
  4. Step 4: Simplify right side
    77,956.96x = 4,534,183,620.84
  5. Step 5: Solve for x
    x = 4,534,183,620.84/77,956.96
  6. Step 6: Final answer
    x = 58,162.65

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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.