Home / 42,919.80-64,369.98-19,214.88

Finding the Fourth Proportional to 42,919.80, 64,369.98 and 19,214.88

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Solution

The fourth proportional to 42,919.80, 64,369.98 and 19,214.88 is: 28,817.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,919.80 : 64,369.98 = 19,214.88 : x
  2. Step 2: Convert to fraction form
    42,919.80/64,369.98 = 19,214.88/x
  3. Step 3: Cross multiply
    42,919.80x = 64,369.98 × 19,214.88
  4. Step 4: Simplify right side
    42,919.80x = 1,236,861,441.30
  5. Step 5: Solve for x
    x = 1,236,861,441.30/42,919.80
  6. Step 6: Final answer
    x = 28,817.97

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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.