Home / 77,403.20-116,137.68-42,301.85

Finding the Fourth Proportional to 77,403.20, 116,137.68 and 42,301.85

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Solution

The fourth proportional to 77,403.20, 116,137.68 and 42,301.85 is: 63,470.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,403.20 : 116,137.68 = 42,301.85 : x
  2. Step 2: Convert to fraction form
    77,403.20/116,137.68 = 42,301.85/x
  3. Step 3: Cross multiply
    77,403.20x = 116,137.68 × 42,301.85
  4. Step 4: Simplify right side
    77,403.20x = 4,912,839,009.05
  5. Step 5: Solve for x
    x = 4,912,839,009.05/77,403.20
  6. Step 6: Final answer
    x = 63,470.75

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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.