Home / 72,035.03-99,412.68-40,205.97

Finding the Fourth Proportional to 72,035.03, 99,412.68 and 40,205.97

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Solution

The fourth proportional to 72,035.03, 99,412.68 and 40,205.97 is: 55,486.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,035.03 : 99,412.68 = 40,205.97 : x
  2. Step 2: Convert to fraction form
    72,035.03/99,412.68 = 40,205.97/x
  3. Step 3: Cross multiply
    72,035.03x = 99,412.68 × 40,205.97
  4. Step 4: Simplify right side
    72,035.03x = 3,996,983,229.70
  5. Step 5: Solve for x
    x = 3,996,983,229.70/72,035.03
  6. Step 6: Final answer
    x = 55,486.66

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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.