Home / 72,939.72-109,292.92-65,941.32

Finding the Fourth Proportional to 72,939.72, 109,292.92 and 65,941.32

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Solution

The fourth proportional to 72,939.72, 109,292.92 and 65,941.32 is: 98,806.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,939.72 : 109,292.92 = 65,941.32 : x
  2. Step 2: Convert to fraction form
    72,939.72/109,292.92 = 65,941.32/x
  3. Step 3: Cross multiply
    72,939.72x = 109,292.92 × 65,941.32
  4. Step 4: Simplify right side
    72,939.72x = 7,206,919,411.45
  5. Step 5: Solve for x
    x = 7,206,919,411.45/72,939.72
  6. Step 6: Final answer
    x = 98,806.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.