Home / 72,054.56-99,431.11-40,225.48

Finding the Fourth Proportional to 72,054.56, 99,431.11 and 40,225.48

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Solution

The fourth proportional to 72,054.56, 99,431.11 and 40,225.48 is: 55,508.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,054.56 : 99,431.11 = 40,225.48 : x
  2. Step 2: Convert to fraction form
    72,054.56/99,431.11 = 40,225.48/x
  3. Step 3: Cross multiply
    72,054.56x = 99,431.11 × 40,225.48
  4. Step 4: Simplify right side
    72,054.56x = 3,999,664,126.68
  5. Step 5: Solve for x
    x = 3,999,664,126.68/72,054.56
  6. Step 6: Final answer
    x = 55,508.83

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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.