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Finding the Fourth Proportional to 90,424.65, 135,605.79 and 37,101.57

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Solution

The fourth proportional to 90,424.65, 135,605.79 and 37,101.57 is: 55,639.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,424.65 : 135,605.79 = 37,101.57 : x
  2. Step 2: Convert to fraction form
    90,424.65/135,605.79 = 37,101.57/x
  3. Step 3: Cross multiply
    90,424.65x = 135,605.79 × 37,101.57
  4. Step 4: Simplify right side
    90,424.65x = 5,031,187,710.09
  5. Step 5: Solve for x
    x = 5,031,187,710.09/90,424.65
  6. Step 6: Final answer
    x = 55,639.56

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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.