Home / 88,891.78-122,701.55-51,181.06

Finding the Fourth Proportional to 88,891.78, 122,701.55 and 51,181.06

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Solution

The fourth proportional to 88,891.78, 122,701.55 and 51,181.06 is: 70,647.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,891.78 : 122,701.55 = 51,181.06 : x
  2. Step 2: Convert to fraction form
    88,891.78/122,701.55 = 51,181.06/x
  3. Step 3: Cross multiply
    88,891.78x = 122,701.55 × 51,181.06
  4. Step 4: Simplify right side
    88,891.78x = 6,279,995,392.64
  5. Step 5: Solve for x
    x = 6,279,995,392.64/88,891.78
  6. Step 6: Final answer
    x = 70,647.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.