Home / 90,172.62-124,439.38-51,938.87

Finding the Fourth Proportional to 90,172.62, 124,439.38 and 51,938.87

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Solution

The fourth proportional to 90,172.62, 124,439.38 and 51,938.87 is: 71,676.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,172.62 : 124,439.38 = 51,938.87 : x
  2. Step 2: Convert to fraction form
    90,172.62/124,439.38 = 51,938.87/x
  3. Step 3: Cross multiply
    90,172.62x = 124,439.38 × 51,938.87
  4. Step 4: Simplify right side
    90,172.62x = 6,463,240,028.66
  5. Step 5: Solve for x
    x = 6,463,240,028.66/90,172.62
  6. Step 6: Final answer
    x = 71,676.30

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1.5x scale

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.