Home / 72,017.17-99,383.77-40,186.08

Finding the Fourth Proportional to 72,017.17, 99,383.77 and 40,186.08

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Solution

The fourth proportional to 72,017.17, 99,383.77 and 40,186.08 is: 55,456.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,017.17 : 99,383.77 = 40,186.08 : x
  2. Step 2: Convert to fraction form
    72,017.17/99,383.77 = 40,186.08/x
  3. Step 3: Cross multiply
    72,017.17x = 99,383.77 × 40,186.08
  4. Step 4: Simplify right side
    72,017.17x = 3,993,844,131.92
  5. Step 5: Solve for x
    x = 3,993,844,131.92/72,017.17
  6. Step 6: Final answer
    x = 55,456.83

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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.