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Finding the Fourth Proportional to 43,700.16, 65,491.68 and 40,900.80

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Solution

The fourth proportional to 43,700.16, 65,491.68 and 40,900.80 is: 61,296.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,700.16 : 65,491.68 = 40,900.80 : x
  2. Step 2: Convert to fraction form
    43,700.16/65,491.68 = 40,900.80/x
  3. Step 3: Cross multiply
    43,700.16x = 65,491.68 × 40,900.80
  4. Step 4: Simplify right side
    43,700.16x = 2,678,662,105.34
  5. Step 5: Solve for x
    x = 2,678,662,105.34/43,700.16
  6. Step 6: Final answer
    x = 61,296.39

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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.