Home / 90,319.82-135,525.99-42,988.46

Finding the Fourth Proportional to 90,319.82, 135,525.99 and 42,988.46

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Solution

The fourth proportional to 90,319.82, 135,525.99 and 42,988.46 is: 64,504.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,319.82 : 135,525.99 = 42,988.46 : x
  2. Step 2: Convert to fraction form
    90,319.82/135,525.99 = 42,988.46/x
  3. Step 3: Cross multiply
    90,319.82x = 135,525.99 × 42,988.46
  4. Step 4: Simplify right side
    90,319.82x = 5,826,053,600.08
  5. Step 5: Solve for x
    x = 5,826,053,600.08/90,319.82
  6. Step 6: Final answer
    x = 64,504.71

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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.