Home / 48,620.80-72,785.40-28,889.20

Finding the Fourth Proportional to 48,620.80, 72,785.40 and 28,889.20

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Solution

The fourth proportional to 48,620.80, 72,785.40 and 28,889.20 is: 43,247.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,620.80 : 72,785.40 = 28,889.20 : x
  2. Step 2: Convert to fraction form
    48,620.80/72,785.40 = 28,889.20/x
  3. Step 3: Cross multiply
    48,620.80x = 72,785.40 × 28,889.20
  4. Step 4: Simplify right side
    48,620.80x = 2,102,711,977.68
  5. Step 5: Solve for x
    x = 2,102,711,977.68/48,620.80
  6. Step 6: Final answer
    x = 43,247.17

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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.