Home / 72,234.88-99,682.32-40,405.12

Finding the Fourth Proportional to 72,234.88, 99,682.32 and 40,405.12

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Solution

The fourth proportional to 72,234.88, 99,682.32 and 40,405.12 is: 55,758.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,234.88 : 99,682.32 = 40,405.12 : x
  2. Step 2: Convert to fraction form
    72,234.88/99,682.32 = 40,405.12/x
  3. Step 3: Cross multiply
    72,234.88x = 99,682.32 × 40,405.12
  4. Step 4: Simplify right side
    72,234.88x = 4,027,676,101.48
  5. Step 5: Solve for x
    x = 4,027,676,101.48/72,234.88
  6. Step 6: Final answer
    x = 55,758.05

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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.