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Finding the Fourth Proportional to 69,730.84, 104,580.51 and 19,809.88

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Solution

The fourth proportional to 69,730.84, 104,580.51 and 19,809.88 is: 29,710.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,730.84 : 104,580.51 = 19,809.88 : x
  2. Step 2: Convert to fraction form
    69,730.84/104,580.51 = 19,809.88/x
  3. Step 3: Cross multiply
    69,730.84x = 104,580.51 × 19,809.88
  4. Step 4: Simplify right side
    69,730.84x = 2,071,727,353.44
  5. Step 5: Solve for x
    x = 2,071,727,353.44/69,730.84
  6. Step 6: Final answer
    x = 29,710.35

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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.