Home / 90,555.40-135,846.04-28,230.76

Finding the Fourth Proportional to 90,555.40, 135,846.04 and 28,230.76

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Solution

The fourth proportional to 90,555.40, 135,846.04 and 28,230.76 is: 42,350.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,555.40 : 135,846.04 = 28,230.76 : x
  2. Step 2: Convert to fraction form
    90,555.40/135,846.04 = 28,230.76/x
  3. Step 3: Cross multiply
    90,555.40x = 135,846.04 × 28,230.76
  4. Step 4: Simplify right side
    90,555.40x = 3,835,036,952.19
  5. Step 5: Solve for x
    x = 3,835,036,952.19/90,555.40
  6. Step 6: Final answer
    x = 42,350.17

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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.