Home / 45,139.80-62,228.01-31,669.32

Finding the Fourth Proportional to 45,139.80, 62,228.01 and 31,669.32

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Solution

The fourth proportional to 45,139.80, 62,228.01 and 31,669.32 is: 43,658.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,139.80 : 62,228.01 = 31,669.32 : x
  2. Step 2: Convert to fraction form
    45,139.80/62,228.01 = 31,669.32/x
  3. Step 3: Cross multiply
    45,139.80x = 62,228.01 × 31,669.32
  4. Step 4: Simplify right side
    45,139.80x = 1,970,718,761.65
  5. Step 5: Solve for x
    x = 1,970,718,761.65/45,139.80
  6. Step 6: Final answer
    x = 43,658.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.