Home / 90,551.40-135,840.04-28,226.76

Finding the Fourth Proportional to 90,551.40, 135,840.04 and 28,226.76

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Solution

The fourth proportional to 90,551.40, 135,840.04 and 28,226.76 is: 42,344.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,551.40 : 135,840.04 = 28,226.76 : x
  2. Step 2: Convert to fraction form
    90,551.40/135,840.04 = 28,226.76/x
  3. Step 3: Cross multiply
    90,551.40x = 135,840.04 × 28,226.76
  4. Step 4: Simplify right side
    90,551.40x = 3,834,324,207.47
  5. Step 5: Solve for x
    x = 3,834,324,207.47/90,551.40
  6. Step 6: Final answer
    x = 42,344.17

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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.