Home / 72,372.06-99,871.65-40,540.74

Finding the Fourth Proportional to 72,372.06, 99,871.65 and 40,540.74

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Solution

The fourth proportional to 72,372.06, 99,871.65 and 40,540.74 is: 55,945.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,372.06 : 99,871.65 = 40,540.74 : x
  2. Step 2: Convert to fraction form
    72,372.06/99,871.65 = 40,540.74/x
  3. Step 3: Cross multiply
    72,372.06x = 99,871.65 × 40,540.74
  4. Step 4: Simplify right side
    72,372.06x = 4,048,870,596.02
  5. Step 5: Solve for x
    x = 4,048,870,596.02/72,372.06
  6. Step 6: Final answer
    x = 55,945.22

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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.