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Finding the Fourth Proportional to 73,009.76, 100,753.64 and 42,789.08

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Solution

The fourth proportional to 73,009.76, 100,753.64 and 42,789.08 is: 59,049.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,009.76 : 100,753.64 = 42,789.08 : x
  2. Step 2: Convert to fraction form
    73,009.76/100,753.64 = 42,789.08/x
  3. Step 3: Cross multiply
    73,009.76x = 100,753.64 × 42,789.08
  4. Step 4: Simplify right side
    73,009.76x = 4,311,155,562.25
  5. Step 5: Solve for x
    x = 4,311,155,562.25/73,009.76
  6. Step 6: Final answer
    x = 59,049.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.