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Finding the Fourth Proportional to 43,424.60, 65,136.72 and 18,460.76

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Solution

The fourth proportional to 43,424.60, 65,136.72 and 18,460.76 is: 27,691.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,424.60 : 65,136.72 = 18,460.76 : x
  2. Step 2: Convert to fraction form
    43,424.60/65,136.72 = 18,460.76/x
  3. Step 3: Cross multiply
    43,424.60x = 65,136.72 × 18,460.76
  4. Step 4: Simplify right side
    43,424.60x = 1,202,473,355.11
  5. Step 5: Solve for x
    x = 1,202,473,355.11/43,424.60
  6. Step 6: Final answer
    x = 27,691.06

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1.5x scale

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.