Home / 72,234.39-99,684.09-40,406.25

Finding the Fourth Proportional to 72,234.39, 99,684.09 and 40,406.25

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Solution

The fourth proportional to 72,234.39, 99,684.09 and 40,406.25 is: 55,760.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,234.39 : 99,684.09 = 40,406.25 : x
  2. Step 2: Convert to fraction form
    72,234.39/99,684.09 = 40,406.25/x
  3. Step 3: Cross multiply
    72,234.39x = 99,684.09 × 40,406.25
  4. Step 4: Simplify right side
    72,234.39x = 4,027,860,261.56
  5. Step 5: Solve for x
    x = 4,027,860,261.56/72,234.39
  6. Step 6: Final answer
    x = 55,760.98

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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.