Home / 42,935.20-64,399.60-21,862.04

Finding the Fourth Proportional to 42,935.20, 64,399.60 and 21,862.04

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Solution

The fourth proportional to 42,935.20, 64,399.60 and 21,862.04 is: 32,791.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,935.20 : 64,399.60 = 21,862.04 : x
  2. Step 2: Convert to fraction form
    42,935.20/64,399.60 = 21,862.04/x
  3. Step 3: Cross multiply
    42,935.20x = 64,399.60 × 21,862.04
  4. Step 4: Simplify right side
    42,935.20x = 1,407,906,631.18
  5. Step 5: Solve for x
    x = 1,407,906,631.18/42,935.20
  6. Step 6: Final answer
    x = 32,791.43

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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.