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Finding the Fourth Proportional to 88,181.66, 121,624 and 61,310.72

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Solution

The fourth proportional to 88,181.66, 121,624 and 61,310.72 is: 84,562.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,181.66 : 121,624 = 61,310.72 : x
  2. Step 2: Convert to fraction form
    88,181.66/121,624 = 61,310.72/x
  3. Step 3: Cross multiply
    88,181.66x = 121,624 × 61,310.72
  4. Step 4: Simplify right side
    88,181.66x = 7,456,854,401.16
  5. Step 5: Solve for x
    x = 7,456,854,401.16/88,181.66
  6. Step 6: Final answer
    x = 84,562.42

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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.