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Finding the Fourth Proportional to 104,611.50, 156,828.80 and 45,402.66

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Solution

The fourth proportional to 104,611.50, 156,828.80 and 45,402.66 is: 68,065.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,611.50 : 156,828.80 = 45,402.66 : x
  2. Step 2: Convert to fraction form
    104,611.50/156,828.80 = 45,402.66/x
  3. Step 3: Cross multiply
    104,611.50x = 156,828.80 × 45,402.66
  4. Step 4: Simplify right side
    104,611.50x = 7,120,444,684.61
  5. Step 5: Solve for x
    x = 7,120,444,684.61/104,611.50
  6. Step 6: Final answer
    x = 68,065.60

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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.