Home / 42,756.80-64,149.03-20,567.27

Finding the Fourth Proportional to 42,756.80, 64,149.03 and 20,567.27

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Solution

The fourth proportional to 42,756.80, 64,149.03 and 20,567.27 is: 30,857.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,756.80 : 64,149.03 = 20,567.27 : x
  2. Step 2: Convert to fraction form
    42,756.80/64,149.03 = 20,567.27/x
  3. Step 3: Cross multiply
    42,756.80x = 64,149.03 × 20,567.27
  4. Step 4: Simplify right side
    42,756.80x = 1,319,370,420.25
  5. Step 5: Solve for x
    x = 1,319,370,420.25/42,756.80
  6. Step 6: Final answer
    x = 30,857.56

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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.