Home / 43,845.87-65,778.54-20,459.55

Finding the Fourth Proportional to 43,845.87, 65,778.54 and 20,459.55

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Solution

The fourth proportional to 43,845.87, 65,778.54 and 20,459.55 is: 30,693.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,845.87 : 65,778.54 = 20,459.55 : x
  2. Step 2: Convert to fraction form
    43,845.87/65,778.54 = 20,459.55/x
  3. Step 3: Cross multiply
    43,845.87x = 65,778.54 × 20,459.55
  4. Step 4: Simplify right side
    43,845.87x = 1,345,799,328.06
  5. Step 5: Solve for x
    x = 1,345,799,328.06/43,845.87
  6. Step 6: Final answer
    x = 30,693.87

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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.