Home / 42,087.22-63,140.54-12,504.40

Finding the Fourth Proportional to 42,087.22, 63,140.54 and 12,504.40

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Solution

The fourth proportional to 42,087.22, 63,140.54 and 12,504.40 is: 18,759.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,087.22 : 63,140.54 = 12,504.40 : x
  2. Step 2: Convert to fraction form
    42,087.22/63,140.54 = 12,504.40/x
  3. Step 3: Cross multiply
    42,087.22x = 63,140.54 × 12,504.40
  4. Step 4: Simplify right side
    42,087.22x = 789,534,568.38
  5. Step 5: Solve for x
    x = 789,534,568.38/42,087.22
  6. Step 6: Final answer
    x = 18,759.48

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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.