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Finding the Fourth Proportional to 70,407.36, 105,610.13 and 17,099.78

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Solution

The fourth proportional to 70,407.36, 105,610.13 and 17,099.78 is: 25,649.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,407.36 : 105,610.13 = 17,099.78 : x
  2. Step 2: Convert to fraction form
    70,407.36/105,610.13 = 17,099.78/x
  3. Step 3: Cross multiply
    70,407.36x = 105,610.13 × 17,099.78
  4. Step 4: Simplify right side
    70,407.36x = 1,805,909,375.22
  5. Step 5: Solve for x
    x = 1,805,909,375.22/70,407.36
  6. Step 6: Final answer
    x = 25,649.44

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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.