Home / 72,020.49-99,388.28-39,755.11

Finding the Fourth Proportional to 72,020.49, 99,388.28 and 39,755.11

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Solution

The fourth proportional to 72,020.49, 99,388.28 and 39,755.11 is: 54,862.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,020.49 : 99,388.28 = 39,755.11 : x
  2. Step 2: Convert to fraction form
    72,020.49/99,388.28 = 39,755.11/x
  3. Step 3: Cross multiply
    72,020.49x = 99,388.28 × 39,755.11
  4. Step 4: Simplify right side
    72,020.49x = 3,951,192,004.11
  5. Step 5: Solve for x
    x = 3,951,192,004.11/72,020.49
  6. Step 6: Final answer
    x = 54,862.05

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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.