Home / 90,138.24-124,390.52-51,883.81

Finding the Fourth Proportional to 90,138.24, 124,390.52 and 51,883.81

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Solution

The fourth proportional to 90,138.24, 124,390.52 and 51,883.81 is: 71,599.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,138.24 : 124,390.52 = 51,883.81 : x
  2. Step 2: Convert to fraction form
    90,138.24/124,390.52 = 51,883.81/x
  3. Step 3: Cross multiply
    90,138.24x = 124,390.52 × 51,883.81
  4. Step 4: Simplify right side
    90,138.24x = 6,453,854,105.48
  5. Step 5: Solve for x
    x = 6,453,854,105.48/90,138.24
  6. Step 6: Final answer
    x = 71,599.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.