Home / 86,822.40-130,233.60-53,434.20

Finding the Fourth Proportional to 86,822.40, 130,233.60 and 53,434.20

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Solution

The fourth proportional to 86,822.40, 130,233.60 and 53,434.20 is: 80,151.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,822.40 : 130,233.60 = 53,434.20 : x
  2. Step 2: Convert to fraction form
    86,822.40/130,233.60 = 53,434.20/x
  3. Step 3: Cross multiply
    86,822.40x = 130,233.60 × 53,434.20
  4. Step 4: Simplify right side
    86,822.40x = 6,958,928,229.12
  5. Step 5: Solve for x
    x = 6,958,928,229.12/86,822.40
  6. Step 6: Final answer
    x = 80,151.30

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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.