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Finding the Fourth Proportional to 90,722.30, 135,974.10 and 46,326.20

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Solution

The fourth proportional to 90,722.30, 135,974.10 and 46,326.20 is: 69,433.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,722.30 : 135,974.10 = 46,326.20 : x
  2. Step 2: Convert to fraction form
    90,722.30/135,974.10 = 46,326.20/x
  3. Step 3: Cross multiply
    90,722.30x = 135,974.10 × 46,326.20
  4. Step 4: Simplify right side
    90,722.30x = 6,299,163,351.42
  5. Step 5: Solve for x
    x = 6,299,163,351.42/90,722.30
  6. Step 6: Final answer
    x = 69,433.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.