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Finding the Fourth Proportional to 66,307.86, 99,460.81 and 16,387.96

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Solution

The fourth proportional to 66,307.86, 99,460.81 and 16,387.96 is: 24,581.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,307.86 : 99,460.81 = 16,387.96 : x
  2. Step 2: Convert to fraction form
    66,307.86/99,460.81 = 16,387.96/x
  3. Step 3: Cross multiply
    66,307.86x = 99,460.81 × 16,387.96
  4. Step 4: Simplify right side
    66,307.86x = 1,629,959,749.53
  5. Step 5: Solve for x
    x = 1,629,959,749.53/66,307.86
  6. Step 6: Final answer
    x = 24,581.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.