Home / 42,761.42-64,155.96-20,571.92

Finding the Fourth Proportional to 42,761.42, 64,155.96 and 20,571.92

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Solution

The fourth proportional to 42,761.42, 64,155.96 and 20,571.92 is: 30,864.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,761.42 : 64,155.96 = 20,571.92 : x
  2. Step 2: Convert to fraction form
    42,761.42/64,155.96 = 20,571.92/x
  3. Step 3: Cross multiply
    42,761.42x = 64,155.96 × 20,571.92
  4. Step 4: Simplify right side
    42,761.42x = 1,319,811,276.64
  5. Step 5: Solve for x
    x = 1,319,811,276.64/42,761.42
  6. Step 6: Final answer
    x = 30,864.53

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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.