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Finding the Fourth Proportional to 73,272.10, 109,920.30 and 28,900.30

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Solution

The fourth proportional to 73,272.10, 109,920.30 and 28,900.30 is: 43,355.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,272.10 : 109,920.30 = 28,900.30 : x
  2. Step 2: Convert to fraction form
    73,272.10/109,920.30 = 28,900.30/x
  3. Step 3: Cross multiply
    73,272.10x = 109,920.30 × 28,900.30
  4. Step 4: Simplify right side
    73,272.10x = 3,176,729,646.09
  5. Step 5: Solve for x
    x = 3,176,729,646.09/73,272.10
  6. Step 6: Final answer
    x = 43,355.24

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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.