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Finding the Fourth Proportional to 73,005.63, 109,520.28 and 28,608.31

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Solution

The fourth proportional to 73,005.63, 109,520.28 and 28,608.31 is: 42,917.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,005.63 : 109,520.28 = 28,608.31 : x
  2. Step 2: Convert to fraction form
    73,005.63/109,520.28 = 28,608.31/x
  3. Step 3: Cross multiply
    73,005.63x = 109,520.28 × 28,608.31
  4. Step 4: Simplify right side
    73,005.63x = 3,133,190,121.53
  5. Step 5: Solve for x
    x = 3,133,190,121.53/73,005.63
  6. Step 6: Final answer
    x = 42,917.10

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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.