Home / 69,721.54-104,582.16-19,802.11

Finding the Fourth Proportional to 69,721.54, 104,582.16 and 19,802.11

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Solution

The fourth proportional to 69,721.54, 104,582.16 and 19,802.11 is: 29,703.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,721.54 : 104,582.16 = 19,802.11 : x
  2. Step 2: Convert to fraction form
    69,721.54/104,582.16 = 19,802.11/x
  3. Step 3: Cross multiply
    69,721.54x = 104,582.16 × 19,802.11
  4. Step 4: Simplify right side
    69,721.54x = 2,070,947,436.36
  5. Step 5: Solve for x
    x = 2,070,947,436.36/69,721.54
  6. Step 6: Final answer
    x = 29,703.12

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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.