Home / 86,822.20-130,233.30-42,455.80

Finding the Fourth Proportional to 86,822.20, 130,233.30 and 42,455.80

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Solution

The fourth proportional to 86,822.20, 130,233.30 and 42,455.80 is: 63,683.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,822.20 : 130,233.30 = 42,455.80 : x
  2. Step 2: Convert to fraction form
    86,822.20/130,233.30 = 42,455.80/x
  3. Step 3: Cross multiply
    86,822.20x = 130,233.30 × 42,455.80
  4. Step 4: Simplify right side
    86,822.20x = 5,529,158,938.14
  5. Step 5: Solve for x
    x = 5,529,158,938.14/86,822.20
  6. Step 6: Final answer
    x = 63,683.70

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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.