Home / 43,139.80-64,683.30-16,814.20

Finding the Fourth Proportional to 43,139.80, 64,683.30 and 16,814.20

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Solution

The fourth proportional to 43,139.80, 64,683.30 and 16,814.20 is: 25,211.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,139.80 : 64,683.30 = 16,814.20 : x
  2. Step 2: Convert to fraction form
    43,139.80/64,683.30 = 16,814.20/x
  3. Step 3: Cross multiply
    43,139.80x = 64,683.30 × 16,814.20
  4. Step 4: Simplify right side
    43,139.80x = 1,087,597,942.86
  5. Step 5: Solve for x
    x = 1,087,597,942.86/43,139.80
  6. Step 6: Final answer
    x = 25,211.01

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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.