Home / 77,271.20-115,906.80-47,746.70

Finding the Fourth Proportional to 77,271.20, 115,906.80 and 47,746.70

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Solution

The fourth proportional to 77,271.20, 115,906.80 and 47,746.70 is: 71,620.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,271.20 : 115,906.80 = 47,746.70 : x
  2. Step 2: Convert to fraction form
    77,271.20/115,906.80 = 47,746.70/x
  3. Step 3: Cross multiply
    77,271.20x = 115,906.80 × 47,746.70
  4. Step 4: Simplify right side
    77,271.20x = 5,534,167,207.56
  5. Step 5: Solve for x
    x = 5,534,167,207.56/77,271.20
  6. Step 6: Final answer
    x = 71,620.05

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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.