Home / 42,866.21-64,340.81-20,695.15

Finding the Fourth Proportional to 42,866.21, 64,340.81 and 20,695.15

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Solution

The fourth proportional to 42,866.21, 64,340.81 and 20,695.15 is: 31,062.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,866.21 : 64,340.81 = 20,695.15 : x
  2. Step 2: Convert to fraction form
    42,866.21/64,340.81 = 20,695.15/x
  3. Step 3: Cross multiply
    42,866.21x = 64,340.81 × 20,695.15
  4. Step 4: Simplify right side
    42,866.21x = 1,331,542,604.96
  5. Step 5: Solve for x
    x = 1,331,542,604.96/42,866.21
  6. Step 6: Final answer
    x = 31,062.76

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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.