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Finding the Fourth Proportional to 72,466.84, 99,998.22 and 40,631.32

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Solution

The fourth proportional to 72,466.84, 99,998.22 and 40,631.32 is: 56,067.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,466.84 : 99,998.22 = 40,631.32 : x
  2. Step 2: Convert to fraction form
    72,466.84/99,998.22 = 40,631.32/x
  3. Step 3: Cross multiply
    72,466.84x = 99,998.22 × 40,631.32
  4. Step 4: Simplify right side
    72,466.84x = 4,063,059,676.25
  5. Step 5: Solve for x
    x = 4,063,059,676.25/72,466.84
  6. Step 6: Final answer
    x = 56,067.85

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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.