Home / 90,570.24-135,866.88-28,235.52

Finding the Fourth Proportional to 90,570.24, 135,866.88 and 28,235.52

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Solution

The fourth proportional to 90,570.24, 135,866.88 and 28,235.52 is: 42,356.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,570.24 : 135,866.88 = 28,235.52 : x
  2. Step 2: Convert to fraction form
    90,570.24/135,866.88 = 28,235.52/x
  3. Step 3: Cross multiply
    90,570.24x = 135,866.88 × 28,235.52
  4. Step 4: Simplify right side
    90,570.24x = 3,836,272,007.58
  5. Step 5: Solve for x
    x = 3,836,272,007.58/90,570.24
  6. Step 6: Final answer
    x = 42,356.87

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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.