Home / 77,244.80-115,867.20-30,491.60

Finding the Fourth Proportional to 77,244.80, 115,867.20 and 30,491.60

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Solution

The fourth proportional to 77,244.80, 115,867.20 and 30,491.60 is: 45,737.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,244.80 : 115,867.20 = 30,491.60 : x
  2. Step 2: Convert to fraction form
    77,244.80/115,867.20 = 30,491.60/x
  3. Step 3: Cross multiply
    77,244.80x = 115,867.20 × 30,491.60
  4. Step 4: Simplify right side
    77,244.80x = 3,532,976,315.52
  5. Step 5: Solve for x
    x = 3,532,976,315.52/77,244.80
  6. Step 6: Final answer
    x = 45,737.40

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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.