Home / 86,976.28-130,464.42-21,312.28

Finding the Fourth Proportional to 86,976.28, 130,464.42 and 21,312.28

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Solution

The fourth proportional to 86,976.28, 130,464.42 and 21,312.28 is: 31,968.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,976.28 : 130,464.42 = 21,312.28 : x
  2. Step 2: Convert to fraction form
    86,976.28/130,464.42 = 21,312.28/x
  3. Step 3: Cross multiply
    86,976.28x = 130,464.42 × 21,312.28
  4. Step 4: Simplify right side
    86,976.28x = 2,780,494,249.08
  5. Step 5: Solve for x
    x = 2,780,494,249.08/86,976.28
  6. Step 6: Final answer
    x = 31,968.42

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Similar ratio
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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.