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Finding the Fourth Proportional to 72,722.74, 100,333.24 and 59,270.86

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Solution

The fourth proportional to 72,722.74, 100,333.24 and 59,270.86 is: 81,774.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,722.74 : 100,333.24 = 59,270.86 : x
  2. Step 2: Convert to fraction form
    72,722.74/100,333.24 = 59,270.86/x
  3. Step 3: Cross multiply
    72,722.74x = 100,333.24 × 59,270.86
  4. Step 4: Simplify right side
    72,722.74x = 5,946,837,421.39
  5. Step 5: Solve for x
    x = 5,946,837,421.39/72,722.74
  6. Step 6: Final answer
    x = 81,774.11

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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.