Home / 67,187.47-100,795.78-20,439.13

Finding the Fourth Proportional to 67,187.47, 100,795.78 and 20,439.13

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Solution

The fourth proportional to 67,187.47, 100,795.78 and 20,439.13 is: 30,663.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,187.47 : 100,795.78 = 20,439.13 : x
  2. Step 2: Convert to fraction form
    67,187.47/100,795.78 = 20,439.13/x
  3. Step 3: Cross multiply
    67,187.47x = 100,795.78 × 20,439.13
  4. Step 4: Simplify right side
    67,187.47x = 2,060,178,050.87
  5. Step 5: Solve for x
    x = 2,060,178,050.87/67,187.47
  6. Step 6: Final answer
    x = 30,663.13

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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.