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Finding the Fourth Proportional to 72,934.64, 100,648.40 and 41,102.90

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Solution

The fourth proportional to 72,934.64, 100,648.40 and 41,102.90 is: 56,721.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,934.64 : 100,648.40 = 41,102.90 : x
  2. Step 2: Convert to fraction form
    72,934.64/100,648.40 = 41,102.90/x
  3. Step 3: Cross multiply
    72,934.64x = 100,648.40 × 41,102.90
  4. Step 4: Simplify right side
    72,934.64x = 4,136,941,120.36
  5. Step 5: Solve for x
    x = 4,136,941,120.36/72,934.64
  6. Step 6: Final answer
    x = 56,721.21

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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.