Home / 42,779.28-64,179.84-17,811

Finding the Fourth Proportional to 42,779.28, 64,179.84 and 17,811

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Solution

The fourth proportional to 42,779.28, 64,179.84 and 17,811 is: 26,721.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,779.28 : 64,179.84 = 17,811 : x
  2. Step 2: Convert to fraction form
    42,779.28/64,179.84 = 17,811/x
  3. Step 3: Cross multiply
    42,779.28x = 64,179.84 × 17,811
  4. Step 4: Simplify right side
    42,779.28x = 1,143,107,130.24
  5. Step 5: Solve for x
    x = 1,143,107,130.24/42,779.28
  6. Step 6: Final answer
    x = 26,721.05

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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.