Home / 81,985.80-123,036.30-35,272.20

Finding the Fourth Proportional to 81,985.80, 123,036.30 and 35,272.20

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Solution

The fourth proportional to 81,985.80, 123,036.30 and 35,272.20 is: 52,933.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,985.80 : 123,036.30 = 35,272.20 : x
  2. Step 2: Convert to fraction form
    81,985.80/123,036.30 = 35,272.20/x
  3. Step 3: Cross multiply
    81,985.80x = 123,036.30 × 35,272.20
  4. Step 4: Simplify right side
    81,985.80x = 4,339,760,980.86
  5. Step 5: Solve for x
    x = 4,339,760,980.86/81,985.80
  6. Step 6: Final answer
    x = 52,933.08

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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.