Home / 72,221.66-99,667.26-40,394.06

Finding the Fourth Proportional to 72,221.66, 99,667.26 and 40,394.06

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Solution

The fourth proportional to 72,221.66, 99,667.26 and 40,394.06 is: 55,744.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,221.66 : 99,667.26 = 40,394.06 : x
  2. Step 2: Convert to fraction form
    72,221.66/99,667.26 = 40,394.06/x
  3. Step 3: Cross multiply
    72,221.66x = 99,667.26 × 40,394.06
  4. Step 4: Simplify right side
    72,221.66x = 4,025,965,280.48
  5. Step 5: Solve for x
    x = 4,025,965,280.48/72,221.66
  6. Step 6: Final answer
    x = 55,744.57

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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.