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Finding the Fourth Proportional to 90,471.63, 124,851.87 and 50,186.55

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Solution

The fourth proportional to 90,471.63, 124,851.87 and 50,186.55 is: 69,258.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,471.63 : 124,851.87 = 50,186.55 : x
  2. Step 2: Convert to fraction form
    90,471.63/124,851.87 = 50,186.55/x
  3. Step 3: Cross multiply
    90,471.63x = 124,851.87 × 50,186.55
  4. Step 4: Simplify right side
    90,471.63x = 6,265,884,616.35
  5. Step 5: Solve for x
    x = 6,265,884,616.35/90,471.63
  6. Step 6: Final answer
    x = 69,258.01

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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.