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Finding the Fourth Proportional to 90,253.64, 135,383.60 and 42,844.31

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Solution

The fourth proportional to 90,253.64, 135,383.60 and 42,844.31 is: 64,267.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,253.64 : 135,383.60 = 42,844.31 : x
  2. Step 2: Convert to fraction form
    90,253.64/135,383.60 = 42,844.31/x
  3. Step 3: Cross multiply
    90,253.64x = 135,383.60 × 42,844.31
  4. Step 4: Simplify right side
    90,253.64x = 5,800,416,927.32
  5. Step 5: Solve for x
    x = 5,800,416,927.32/90,253.64
  6. Step 6: Final answer
    x = 64,267.96

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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.