Home / 72,165.80-99,589.18-40,334.02

Finding the Fourth Proportional to 72,165.80, 99,589.18 and 40,334.02

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Solution

The fourth proportional to 72,165.80, 99,589.18 and 40,334.02 is: 55,661.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,165.80 : 99,589.18 = 40,334.02 : x
  2. Step 2: Convert to fraction form
    72,165.80/99,589.18 = 40,334.02/x
  3. Step 3: Cross multiply
    72,165.80x = 99,589.18 × 40,334.02
  4. Step 4: Simplify right side
    72,165.80x = 4,016,831,977.90
  5. Step 5: Solve for x
    x = 4,016,831,977.90/72,165.80
  6. Step 6: Final answer
    x = 55,661.16

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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.