Home / 43,272.20-64,835.40-21,037.70

Finding the Fourth Proportional to 43,272.20, 64,835.40 and 21,037.70

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Solution

The fourth proportional to 43,272.20, 64,835.40 and 21,037.70 is: 31,521.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,272.20 : 64,835.40 = 21,037.70 : x
  2. Step 2: Convert to fraction form
    43,272.20/64,835.40 = 21,037.70/x
  3. Step 3: Cross multiply
    43,272.20x = 64,835.40 × 21,037.70
  4. Step 4: Simplify right side
    43,272.20x = 1,363,987,694.58
  5. Step 5: Solve for x
    x = 1,363,987,694.58/43,272.20
  6. Step 6: Final answer
    x = 31,521.11

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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.