Home / 86,822.20-130,233.30-51,830.20

Finding the Fourth Proportional to 86,822.20, 130,233.30 and 51,830.20

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Solution

The fourth proportional to 86,822.20, 130,233.30 and 51,830.20 is: 77,745.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,822.20 : 130,233.30 = 51,830.20 : x
  2. Step 2: Convert to fraction form
    86,822.20/130,233.30 = 51,830.20/x
  3. Step 3: Cross multiply
    86,822.20x = 130,233.30 × 51,830.20
  4. Step 4: Simplify right side
    86,822.20x = 6,750,017,985.66
  5. Step 5: Solve for x
    x = 6,750,017,985.66/86,822.20
  6. Step 6: Final answer
    x = 77,745.30

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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.