Home / 42,085.96-63,138.66-12,503.14

Finding the Fourth Proportional to 42,085.96, 63,138.66 and 12,503.14

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Solution

The fourth proportional to 42,085.96, 63,138.66 and 12,503.14 is: 18,757.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,085.96 : 63,138.66 = 12,503.14 : x
  2. Step 2: Convert to fraction form
    42,085.96/63,138.66 = 12,503.14/x
  3. Step 3: Cross multiply
    42,085.96x = 63,138.66 × 12,503.14
  4. Step 4: Simplify right side
    42,085.96x = 789,431,505.39
  5. Step 5: Solve for x
    x = 789,431,505.39/42,085.96
  6. Step 6: Final answer
    x = 18,757.60

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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.