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Finding the Fourth Proportional to 72,683.64, 100,306.26 and 40,852.44

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Solution

The fourth proportional to 72,683.64, 100,306.26 and 40,852.44 is: 56,377.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,683.64 : 100,306.26 = 40,852.44 : x
  2. Step 2: Convert to fraction form
    72,683.64/100,306.26 = 40,852.44/x
  3. Step 3: Cross multiply
    72,683.64x = 100,306.26 × 40,852.44
  4. Step 4: Simplify right side
    72,683.64x = 4,097,755,468.27
  5. Step 5: Solve for x
    x = 4,097,755,468.27/72,683.64
  6. Step 6: Final answer
    x = 56,377.96

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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.