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Finding the Fourth Proportional to 90,043.80, 135,083.79 and 26,864.88

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Solution

The fourth proportional to 90,043.80, 135,083.79 and 26,864.88 is: 40,302.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,043.80 : 135,083.79 = 26,864.88 : x
  2. Step 2: Convert to fraction form
    90,043.80/135,083.79 = 26,864.88/x
  3. Step 3: Cross multiply
    90,043.80x = 135,083.79 × 26,864.88
  4. Step 4: Simplify right side
    90,043.80x = 3,629,009,808.30
  5. Step 5: Solve for x
    x = 3,629,009,808.30/90,043.80
  6. Step 6: Final answer
    x = 40,302.72

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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.