Home / 55,985.72-83,990.43-18,543.68

Finding the Fourth Proportional to 55,985.72, 83,990.43 and 18,543.68

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Solution

The fourth proportional to 55,985.72, 83,990.43 and 18,543.68 is: 27,819.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,985.72 : 83,990.43 = 18,543.68 : x
  2. Step 2: Convert to fraction form
    55,985.72/83,990.43 = 18,543.68/x
  3. Step 3: Cross multiply
    55,985.72x = 83,990.43 × 18,543.68
  4. Step 4: Simplify right side
    55,985.72x = 1,557,491,237.03
  5. Step 5: Solve for x
    x = 1,557,491,237.03/55,985.72
  6. Step 6: Final answer
    x = 27,819.44

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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.