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Finding the Fourth Proportional to 66,710.34, 92,056.80 and 36,489.78

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Solution

The fourth proportional to 66,710.34, 92,056.80 and 36,489.78 is: 50,354.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,710.34 : 92,056.80 = 36,489.78 : x
  2. Step 2: Convert to fraction form
    66,710.34/92,056.80 = 36,489.78/x
  3. Step 3: Cross multiply
    66,710.34x = 92,056.80 × 36,489.78
  4. Step 4: Simplify right side
    66,710.34x = 3,359,132,379.50
  5. Step 5: Solve for x
    x = 3,359,132,379.50/66,710.34
  6. Step 6: Final answer
    x = 50,354.00

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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.