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Finding the Fourth Proportional to 90,754.60, 135,924.54 and 53,740.84

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Solution

The fourth proportional to 90,754.60, 135,924.54 and 53,740.84 is: 80,488.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,754.60 : 135,924.54 = 53,740.84 : x
  2. Step 2: Convert to fraction form
    90,754.60/135,924.54 = 53,740.84/x
  3. Step 3: Cross multiply
    90,754.60x = 135,924.54 × 53,740.84
  4. Step 4: Simplify right side
    90,754.60x = 7,304,698,956.21
  5. Step 5: Solve for x
    x = 7,304,698,956.21/90,754.60
  6. Step 6: Final answer
    x = 80,488.47

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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.