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Finding the Fourth Proportional to 145,814.60, 218,694.90 and 40,611.80

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Solution

The fourth proportional to 145,814.60, 218,694.90 and 40,611.80 is: 60,910.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,814.60 : 218,694.90 = 40,611.80 : x
  2. Step 2: Convert to fraction form
    145,814.60/218,694.90 = 40,611.80/x
  3. Step 3: Cross multiply
    145,814.60x = 218,694.90 × 40,611.80
  4. Step 4: Simplify right side
    145,814.60x = 8,881,593,539.82
  5. Step 5: Solve for x
    x = 8,881,593,539.82/145,814.60
  6. Step 6: Final answer
    x = 60,910.18

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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.