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Finding the Fourth Proportional to 73,781.76, 101,840.64 and 51,432.96

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Solution

The fourth proportional to 73,781.76, 101,840.64 and 51,432.96 is: 70,992.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,781.76 : 101,840.64 = 51,432.96 : x
  2. Step 2: Convert to fraction form
    73,781.76/101,840.64 = 51,432.96/x
  3. Step 3: Cross multiply
    73,781.76x = 101,840.64 × 51,432.96
  4. Step 4: Simplify right side
    73,781.76x = 5,237,965,563.49
  5. Step 5: Solve for x
    x = 5,237,965,563.49/73,781.76
  6. Step 6: Final answer
    x = 70,992.69

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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.