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Finding the Fourth Proportional to 72,460.64, 99,910.32 and 67,086.56

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Solution

The fourth proportional to 72,460.64, 99,910.32 and 67,086.56 is: 92,500.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,460.64 : 99,910.32 = 67,086.56 : x
  2. Step 2: Convert to fraction form
    72,460.64/99,910.32 = 67,086.56/x
  3. Step 3: Cross multiply
    72,460.64x = 99,910.32 × 67,086.56
  4. Step 4: Simplify right side
    72,460.64x = 6,702,639,677.30
  5. Step 5: Solve for x
    x = 6,702,639,677.30/72,460.64
  6. Step 6: Final answer
    x = 92,500.42

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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.