Home / 72,187.10-108,207.96-30,090.49

Finding the Fourth Proportional to 72,187.10, 108,207.96 and 30,090.49

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Solution

The fourth proportional to 72,187.10, 108,207.96 and 30,090.49 is: 45,105.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,187.10 : 108,207.96 = 30,090.49 : x
  2. Step 2: Convert to fraction form
    72,187.10/108,207.96 = 30,090.49/x
  3. Step 3: Cross multiply
    72,187.10x = 108,207.96 × 30,090.49
  4. Step 4: Simplify right side
    72,187.10x = 3,256,030,154.94
  5. Step 5: Solve for x
    x = 3,256,030,154.94/72,187.10
  6. Step 6: Final answer
    x = 45,105.43

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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.