Home / 72,657.36-108,988.11-20,066.85

Finding the Fourth Proportional to 72,657.36, 108,988.11 and 20,066.85

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Solution

The fourth proportional to 72,657.36, 108,988.11 and 20,066.85 is: 30,100.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,657.36 : 108,988.11 = 20,066.85 : x
  2. Step 2: Convert to fraction form
    72,657.36/108,988.11 = 20,066.85/x
  3. Step 3: Cross multiply
    72,657.36x = 108,988.11 × 20,066.85
  4. Step 4: Simplify right side
    72,657.36x = 2,187,048,055.15
  5. Step 5: Solve for x
    x = 2,187,048,055.15/72,657.36
  6. Step 6: Final answer
    x = 30,100.85

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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.