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Finding the Fourth Proportional to 72,364.97, 99,860.76 and 40,532.24

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Solution

The fourth proportional to 72,364.97, 99,860.76 and 40,532.24 is: 55,932.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,364.97 : 99,860.76 = 40,532.24 : x
  2. Step 2: Convert to fraction form
    72,364.97/99,860.76 = 40,532.24/x
  3. Step 3: Cross multiply
    72,364.97x = 99,860.76 × 40,532.24
  4. Step 4: Simplify right side
    72,364.97x = 4,047,579,791.60
  5. Step 5: Solve for x
    x = 4,047,579,791.60/72,364.97
  6. Step 6: Final answer
    x = 55,932.86

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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.