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Finding the Fourth Proportional to 90,471.86, 124,850.70 and 50,185.20

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Solution

The fourth proportional to 90,471.86, 124,850.70 and 50,185.20 is: 69,255.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,471.86 : 124,850.70 = 50,185.20 : x
  2. Step 2: Convert to fraction form
    90,471.86/124,850.70 = 50,185.20/x
  3. Step 3: Cross multiply
    90,471.86x = 124,850.70 × 50,185.20
  4. Step 4: Simplify right side
    90,471.86x = 6,265,657,349.64
  5. Step 5: Solve for x
    x = 6,265,657,349.64/90,471.86
  6. Step 6: Final answer
    x = 69,255.32

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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.