Home / 77,825.57-116,690.37-30,385.43

Finding the Fourth Proportional to 77,825.57, 116,690.37 and 30,385.43

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Solution

The fourth proportional to 77,825.57, 116,690.37 and 30,385.43 is: 45,559.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,825.57 : 116,690.37 = 30,385.43 : x
  2. Step 2: Convert to fraction form
    77,825.57/116,690.37 = 30,385.43/x
  3. Step 3: Cross multiply
    77,825.57x = 116,690.37 × 30,385.43
  4. Step 4: Simplify right side
    77,825.57x = 3,545,686,485.86
  5. Step 5: Solve for x
    x = 3,545,686,485.86/77,825.57
  6. Step 6: Final answer
    x = 45,559.41

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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.