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Finding the Fourth Proportional to 100,571.07, 150,875.07 and 47,980.56

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Solution

The fourth proportional to 100,571.07, 150,875.07 and 47,980.56 is: 71,979.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,571.07 : 150,875.07 = 47,980.56 : x
  2. Step 2: Convert to fraction form
    100,571.07/150,875.07 = 47,980.56/x
  3. Step 3: Cross multiply
    100,571.07x = 150,875.07 × 47,980.56
  4. Step 4: Simplify right side
    100,571.07x = 7,239,070,348.64
  5. Step 5: Solve for x
    x = 7,239,070,348.64/100,571.07
  6. Step 6: Final answer
    x = 71,979.65

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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.