Home / 42,481.09-63,721.64-19,091.13

Finding the Fourth Proportional to 42,481.09, 63,721.64 and 19,091.13

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Solution

The fourth proportional to 42,481.09, 63,721.64 and 19,091.13 is: 28,636.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,481.09 : 63,721.64 = 19,091.13 : x
  2. Step 2: Convert to fraction form
    42,481.09/63,721.64 = 19,091.13/x
  3. Step 3: Cross multiply
    42,481.09x = 63,721.64 × 19,091.13
  4. Step 4: Simplify right side
    42,481.09x = 1,216,518,113.05
  5. Step 5: Solve for x
    x = 1,216,518,113.05/42,481.09
  6. Step 6: Final answer
    x = 28,636.70

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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.