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Finding the Fourth Proportional to 90,722.88, 135,793.16 and 48,497.40

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Solution

The fourth proportional to 90,722.88, 135,793.16 and 48,497.40 is: 72,590.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,722.88 : 135,793.16 = 48,497.40 : x
  2. Step 2: Convert to fraction form
    90,722.88/135,793.16 = 48,497.40/x
  3. Step 3: Cross multiply
    90,722.88x = 135,793.16 × 48,497.40
  4. Step 4: Simplify right side
    90,722.88x = 6,585,615,197.78
  5. Step 5: Solve for x
    x = 6,585,615,197.78/90,722.88
  6. Step 6: Final answer
    x = 72,590.46

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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.