Home / 90,369.80-135,515.82-28,045.16

Finding the Fourth Proportional to 90,369.80, 135,515.82 and 28,045.16

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Solution

The fourth proportional to 90,369.80, 135,515.82 and 28,045.16 is: 42,055.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,369.80 : 135,515.82 = 28,045.16 : x
  2. Step 2: Convert to fraction form
    90,369.80/135,515.82 = 28,045.16/x
  3. Step 3: Cross multiply
    90,369.80x = 135,515.82 × 28,045.16
  4. Step 4: Simplify right side
    90,369.80x = 3,800,562,854.43
  5. Step 5: Solve for x
    x = 3,800,562,854.43/90,369.80
  6. Step 6: Final answer
    x = 42,055.67

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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.