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Finding the Fourth Proportional to 100,448.76, 150,489.50 and 47,042.76

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Solution

The fourth proportional to 100,448.76, 150,489.50 and 47,042.76 is: 70,478.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,448.76 : 150,489.50 = 47,042.76 : x
  2. Step 2: Convert to fraction form
    100,448.76/150,489.50 = 47,042.76/x
  3. Step 3: Cross multiply
    100,448.76x = 150,489.50 × 47,042.76
  4. Step 4: Simplify right side
    100,448.76x = 7,079,441,431.02
  5. Step 5: Solve for x
    x = 7,079,441,431.02/100,448.76
  6. Step 6: Final answer
    x = 70,478.14

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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.