Home / 67,272.34-100,904.75-20,521.54

Finding the Fourth Proportional to 67,272.34, 100,904.75 and 20,521.54

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Solution

The fourth proportional to 67,272.34, 100,904.75 and 20,521.54 is: 30,781.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,272.34 : 100,904.75 = 20,521.54 : x
  2. Step 2: Convert to fraction form
    67,272.34/100,904.75 = 20,521.54/x
  3. Step 3: Cross multiply
    67,272.34x = 100,904.75 × 20,521.54
  4. Step 4: Simplify right side
    67,272.34x = 2,070,720,863.32
  5. Step 5: Solve for x
    x = 2,070,720,863.32/67,272.34
  6. Step 6: Final answer
    x = 30,781.16

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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.