Home / 90,438.50-124,805.14-50,158.42

Finding the Fourth Proportional to 90,438.50, 124,805.14 and 50,158.42

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Solution

The fourth proportional to 90,438.50, 124,805.14 and 50,158.42 is: 69,218.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,438.50 : 124,805.14 = 50,158.42 : x
  2. Step 2: Convert to fraction form
    90,438.50/124,805.14 = 50,158.42/x
  3. Step 3: Cross multiply
    90,438.50x = 124,805.14 × 50,158.42
  4. Step 4: Simplify right side
    90,438.50x = 6,260,028,630.28
  5. Step 5: Solve for x
    x = 6,260,028,630.28/90,438.50
  6. Step 6: Final answer
    x = 69,218.63

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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.