Home / 77,943.90-107,562.24-42,133.98

Finding the Fourth Proportional to 77,943.90, 107,562.24 and 42,133.98

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Solution

The fourth proportional to 77,943.90, 107,562.24 and 42,133.98 is: 58,144.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,943.90 : 107,562.24 = 42,133.98 : x
  2. Step 2: Convert to fraction form
    77,943.90/107,562.24 = 42,133.98/x
  3. Step 3: Cross multiply
    77,943.90x = 107,562.24 × 42,133.98
  4. Step 4: Simplify right side
    77,943.90x = 4,532,025,268.92
  5. Step 5: Solve for x
    x = 4,532,025,268.92/77,943.90
  6. Step 6: Final answer
    x = 58,144.71

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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.