Home / 77,920.20-116,945.64-40,503.24

Finding the Fourth Proportional to 77,920.20, 116,945.64 and 40,503.24

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Solution

The fourth proportional to 77,920.20, 116,945.64 and 40,503.24 is: 60,788.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,920.20 : 116,945.64 = 40,503.24 : x
  2. Step 2: Convert to fraction form
    77,920.20/116,945.64 = 40,503.24/x
  3. Step 3: Cross multiply
    77,920.20x = 116,945.64 × 40,503.24
  4. Step 4: Simplify right side
    77,920.20x = 4,736,677,323.87
  5. Step 5: Solve for x
    x = 4,736,677,323.87/77,920.20
  6. Step 6: Final answer
    x = 60,788.82

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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.