Home / 43,285.60-64,924.08-12,121.12

Finding the Fourth Proportional to 43,285.60, 64,924.08 and 12,121.12

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Solution

The fourth proportional to 43,285.60, 64,924.08 and 12,121.12 is: 18,180.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,285.60 : 64,924.08 = 12,121.12 : x
  2. Step 2: Convert to fraction form
    43,285.60/64,924.08 = 12,121.12/x
  3. Step 3: Cross multiply
    43,285.60x = 64,924.08 × 12,121.12
  4. Step 4: Simplify right side
    43,285.60x = 786,952,564.57
  5. Step 5: Solve for x
    x = 786,952,564.57/43,285.60
  6. Step 6: Final answer
    x = 18,180.47

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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.