Home / 90,028.66-135,036.51-39,432.82

Finding the Fourth Proportional to 90,028.66, 135,036.51 and 39,432.82

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Solution

The fourth proportional to 90,028.66, 135,036.51 and 39,432.82 is: 59,146.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,028.66 : 135,036.51 = 39,432.82 : x
  2. Step 2: Convert to fraction form
    90,028.66/135,036.51 = 39,432.82/x
  3. Step 3: Cross multiply
    90,028.66x = 135,036.51 × 39,432.82
  4. Step 4: Simplify right side
    90,028.66x = 5,324,870,392.26
  5. Step 5: Solve for x
    x = 5,324,870,392.26/90,028.66
  6. Step 6: Final answer
    x = 59,146.39

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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.