Home / 72,165.96-99,588.60-40,334.76

Finding the Fourth Proportional to 72,165.96, 99,588.60 and 40,334.76

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Solution

The fourth proportional to 72,165.96, 99,588.60 and 40,334.76 is: 55,661.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,165.96 : 99,588.60 = 40,334.76 : x
  2. Step 2: Convert to fraction form
    72,165.96/99,588.60 = 40,334.76/x
  3. Step 3: Cross multiply
    72,165.96x = 99,588.60 × 40,334.76
  4. Step 4: Simplify right side
    72,165.96x = 4,016,882,279.74
  5. Step 5: Solve for x
    x = 4,016,882,279.74/72,165.96
  6. Step 6: Final answer
    x = 55,661.73

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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.