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Finding the Fourth Proportional to 72,473.58, 100,016.07 and 42,253.78

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Solution

The fourth proportional to 72,473.58, 100,016.07 and 42,253.78 is: 58,311.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,473.58 : 100,016.07 = 42,253.78 : x
  2. Step 2: Convert to fraction form
    72,473.58/100,016.07 = 42,253.78/x
  3. Step 3: Cross multiply
    72,473.58x = 100,016.07 × 42,253.78
  4. Step 4: Simplify right side
    72,473.58x = 4,226,057,018.24
  5. Step 5: Solve for x
    x = 4,226,057,018.24/72,473.58
  6. Step 6: Final answer
    x = 58,311.69

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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.