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Finding the Fourth Proportional to 69,712.79, 104,568.93 and 19,792.89

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Solution

The fourth proportional to 69,712.79, 104,568.93 and 19,792.89 is: 29,689.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,712.79 : 104,568.93 = 19,792.89 : x
  2. Step 2: Convert to fraction form
    69,712.79/104,568.93 = 19,792.89/x
  3. Step 3: Cross multiply
    69,712.79x = 104,568.93 × 19,792.89
  4. Step 4: Simplify right side
    69,712.79x = 2,069,721,328.91
  5. Step 5: Solve for x
    x = 2,069,721,328.91/69,712.79
  6. Step 6: Final answer
    x = 29,689.26

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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.