Home / 77,268.14-115,902.20-42,188.66

Finding the Fourth Proportional to 77,268.14, 115,902.20 and 42,188.66

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Solution

The fourth proportional to 77,268.14, 115,902.20 and 42,188.66 is: 63,282.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,268.14 : 115,902.20 = 42,188.66 : x
  2. Step 2: Convert to fraction form
    77,268.14/115,902.20 = 42,188.66/x
  3. Step 3: Cross multiply
    77,268.14x = 115,902.20 × 42,188.66
  4. Step 4: Simplify right side
    77,268.14x = 4,889,758,035.01
  5. Step 5: Solve for x
    x = 4,889,758,035.01/77,268.14
  6. Step 6: Final answer
    x = 63,282.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.