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Finding the Fourth Proportional to 73,808.92, 101,905.34 and 56,783.12

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Solution

The fourth proportional to 73,808.92, 101,905.34 and 56,783.12 is: 78,398.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,808.92 : 101,905.34 = 56,783.12 : x
  2. Step 2: Convert to fraction form
    73,808.92/101,905.34 = 56,783.12/x
  3. Step 3: Cross multiply
    73,808.92x = 101,905.34 × 56,783.12
  4. Step 4: Simplify right side
    73,808.92x = 5,786,503,120.71
  5. Step 5: Solve for x
    x = 5,786,503,120.71/73,808.92
  6. Step 6: Final answer
    x = 78,398.43

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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.