Home / 90,738.87-136,139.51-53,330.24

Finding the Fourth Proportional to 90,738.87, 136,139.51 and 53,330.24

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Solution

The fourth proportional to 90,738.87, 136,139.51 and 53,330.24 is: 80,013.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,738.87 : 136,139.51 = 53,330.24 : x
  2. Step 2: Convert to fraction form
    90,738.87/136,139.51 = 53,330.24/x
  3. Step 3: Cross multiply
    90,738.87x = 136,139.51 × 53,330.24
  4. Step 4: Simplify right side
    90,738.87x = 7,260,351,794.43
  5. Step 5: Solve for x
    x = 7,260,351,794.43/90,738.87
  6. Step 6: Final answer
    x = 80,013.69

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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.