Home / 77,180.40-115,705.80-40,244.40

Finding the Fourth Proportional to 77,180.40, 115,705.80 and 40,244.40

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Solution

The fourth proportional to 77,180.40, 115,705.80 and 40,244.40 is: 60,332.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,180.40 : 115,705.80 = 40,244.40 : x
  2. Step 2: Convert to fraction form
    77,180.40/115,705.80 = 40,244.40/x
  3. Step 3: Cross multiply
    77,180.40x = 115,705.80 × 40,244.40
  4. Step 4: Simplify right side
    77,180.40x = 4,656,510,497.52
  5. Step 5: Solve for x
    x = 4,656,510,497.52/77,180.40
  6. Step 6: Final answer
    x = 60,332.81

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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.