Home / 77,956.44-107,580.69-42,147.15

Finding the Fourth Proportional to 77,956.44, 107,580.69 and 42,147.15

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Solution

The fourth proportional to 77,956.44, 107,580.69 and 42,147.15 is: 58,163.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,956.44 : 107,580.69 = 42,147.15 : x
  2. Step 2: Convert to fraction form
    77,956.44/107,580.69 = 42,147.15/x
  3. Step 3: Cross multiply
    77,956.44x = 107,580.69 × 42,147.15
  4. Step 4: Simplify right side
    77,956.44x = 4,534,219,478.53
  5. Step 5: Solve for x
    x = 4,534,219,478.53/77,956.44
  6. Step 6: Final answer
    x = 58,163.50

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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.