Home / 72,171.41-99,593.87-40,340.84

Finding the Fourth Proportional to 72,171.41, 99,593.87 and 40,340.84

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Solution

The fourth proportional to 72,171.41, 99,593.87 and 40,340.84 is: 55,668.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,171.41 : 99,593.87 = 40,340.84 : x
  2. Step 2: Convert to fraction form
    72,171.41/99,593.87 = 40,340.84/x
  3. Step 3: Cross multiply
    72,171.41x = 99,593.87 × 40,340.84
  4. Step 4: Simplify right side
    72,171.41x = 4,017,700,724.49
  5. Step 5: Solve for x
    x = 4,017,700,724.49/72,171.41
  6. Step 6: Final answer
    x = 55,668.87

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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.