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Finding the Fourth Proportional to 69,570.79, 104,356.43 and 16,980.27

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Solution

The fourth proportional to 69,570.79, 104,356.43 and 16,980.27 is: 25,470.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,570.79 : 104,356.43 = 16,980.27 : x
  2. Step 2: Convert to fraction form
    69,570.79/104,356.43 = 16,980.27/x
  3. Step 3: Cross multiply
    69,570.79x = 104,356.43 × 16,980.27
  4. Step 4: Simplify right side
    69,570.79x = 1,772,000,337.57
  5. Step 5: Solve for x
    x = 1,772,000,337.57/69,570.79
  6. Step 6: Final answer
    x = 25,470.47

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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.