Home / 90,844.75-136,271.99-28,520.11

Finding the Fourth Proportional to 90,844.75, 136,271.99 and 28,520.11

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Solution

The fourth proportional to 90,844.75, 136,271.99 and 28,520.11 is: 42,781.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,844.75 : 136,271.99 = 28,520.11 : x
  2. Step 2: Convert to fraction form
    90,844.75/136,271.99 = 28,520.11/x
  3. Step 3: Cross multiply
    90,844.75x = 136,271.99 × 28,520.11
  4. Step 4: Simplify right side
    90,844.75x = 3,886,492,144.72
  5. Step 5: Solve for x
    x = 3,886,492,144.72/90,844.75
  6. Step 6: Final answer
    x = 42,781.69

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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.