Home / 90,555.75-135,841.12-28,226.25

Finding the Fourth Proportional to 90,555.75, 135,841.12 and 28,226.25

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Solution

The fourth proportional to 90,555.75, 135,841.12 and 28,226.25 is: 42,341.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,555.75 : 135,841.12 = 28,226.25 : x
  2. Step 2: Convert to fraction form
    90,555.75/135,841.12 = 28,226.25/x
  3. Step 3: Cross multiply
    90,555.75x = 135,841.12 × 28,226.25
  4. Step 4: Simplify right side
    90,555.75x = 3,834,285,342.83
  5. Step 5: Solve for x
    x = 3,834,285,342.83/90,555.75
  6. Step 6: Final answer
    x = 42,341.71

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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.