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Finding the Fourth Proportional to 69,990.48, 104,979.24 and 25,615.44

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Solution

The fourth proportional to 69,990.48, 104,979.24 and 25,615.44 is: 38,420.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,990.48 : 104,979.24 = 25,615.44 : x
  2. Step 2: Convert to fraction form
    69,990.48/104,979.24 = 25,615.44/x
  3. Step 3: Cross multiply
    69,990.48x = 104,979.24 × 25,615.44
  4. Step 4: Simplify right side
    69,990.48x = 2,689,089,423.47
  5. Step 5: Solve for x
    x = 2,689,089,423.47/69,990.48
  6. Step 6: Final answer
    x = 38,420.79

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1.5x scale

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.