Home / 42,012.80-62,942.40-34,179.20

Finding the Fourth Proportional to 42,012.80, 62,942.40 and 34,179.20

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Solution

The fourth proportional to 42,012.80, 62,942.40 and 34,179.20 is: 51,206.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,012.80 : 62,942.40 = 34,179.20 : x
  2. Step 2: Convert to fraction form
    42,012.80/62,942.40 = 34,179.20/x
  3. Step 3: Cross multiply
    42,012.80x = 62,942.40 × 34,179.20
  4. Step 4: Simplify right side
    42,012.80x = 2,151,320,878.08
  5. Step 5: Solve for x
    x = 2,151,320,878.08/42,012.80
  6. Step 6: Final answer
    x = 51,206.32

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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.