Home / 90,461.78-124,832.16-50,172.65

Finding the Fourth Proportional to 90,461.78, 124,832.16 and 50,172.65

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Solution

The fourth proportional to 90,461.78, 124,832.16 and 50,172.65 is: 69,235.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,461.78 : 124,832.16 = 50,172.65 : x
  2. Step 2: Convert to fraction form
    90,461.78/124,832.16 = 50,172.65/x
  3. Step 3: Cross multiply
    90,461.78x = 124,832.16 × 50,172.65
  4. Step 4: Simplify right side
    90,461.78x = 6,263,160,272.42
  5. Step 5: Solve for x
    x = 6,263,160,272.42/90,461.78
  6. Step 6: Final answer
    x = 69,235.43

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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.