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Finding the Fourth Proportional to 73,018.92, 100,776.20 and 42,811.68

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Solution

The fourth proportional to 73,018.92, 100,776.20 and 42,811.68 is: 59,086.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,018.92 : 100,776.20 = 42,811.68 : x
  2. Step 2: Convert to fraction form
    73,018.92/100,776.20 = 42,811.68/x
  3. Step 3: Cross multiply
    73,018.92x = 100,776.20 × 42,811.68
  4. Step 4: Simplify right side
    73,018.92x = 4,314,398,211.96
  5. Step 5: Solve for x
    x = 4,314,398,211.96/73,018.92
  6. Step 6: Final answer
    x = 59,086.03

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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.