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Finding the Fourth Proportional to 43,457.80, 65,121.90 and 36,848.20

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Solution

The fourth proportional to 43,457.80, 65,121.90 and 36,848.20 is: 55,217.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,457.80 : 65,121.90 = 36,848.20 : x
  2. Step 2: Convert to fraction form
    43,457.80/65,121.90 = 36,848.20/x
  3. Step 3: Cross multiply
    43,457.80x = 65,121.90 × 36,848.20
  4. Step 4: Simplify right side
    43,457.80x = 2,399,624,795.58
  5. Step 5: Solve for x
    x = 2,399,624,795.58/43,457.80
  6. Step 6: Final answer
    x = 55,217.36

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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.