Home / 77,947.18-107,568.10-47,311.43

Finding the Fourth Proportional to 77,947.18, 107,568.10 and 47,311.43

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Solution

The fourth proportional to 77,947.18, 107,568.10 and 47,311.43 is: 65,290.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,947.18 : 107,568.10 = 47,311.43 : x
  2. Step 2: Convert to fraction form
    77,947.18/107,568.10 = 47,311.43/x
  3. Step 3: Cross multiply
    77,947.18x = 107,568.10 × 47,311.43
  4. Step 4: Simplify right side
    77,947.18x = 5,089,200,154.68
  5. Step 5: Solve for x
    x = 5,089,200,154.68/77,947.18
  6. Step 6: Final answer
    x = 65,290.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.