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Finding the Fourth Proportional to 72,644.88, 100,252.50 and 40,813.14

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Solution

The fourth proportional to 72,644.88, 100,252.50 and 40,813.14 is: 56,323.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,644.88 : 100,252.50 = 40,813.14 : x
  2. Step 2: Convert to fraction form
    72,644.88/100,252.50 = 40,813.14/x
  3. Step 3: Cross multiply
    72,644.88x = 100,252.50 × 40,813.14
  4. Step 4: Simplify right side
    72,644.88x = 4,091,619,317.85
  5. Step 5: Solve for x
    x = 4,091,619,317.85/72,644.88
  6. Step 6: Final answer
    x = 56,323.57

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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.