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Finding the Fourth Proportional to 39,912.40, 59,814.60 and 25,829.20

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Solution

The fourth proportional to 39,912.40, 59,814.60 and 25,829.20 is: 38,708.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,912.40 : 59,814.60 = 25,829.20 : x
  2. Step 2: Convert to fraction form
    39,912.40/59,814.60 = 25,829.20/x
  3. Step 3: Cross multiply
    39,912.40x = 59,814.60 × 25,829.20
  4. Step 4: Simplify right side
    39,912.40x = 1,544,963,266.32
  5. Step 5: Solve for x
    x = 1,544,963,266.32/39,912.40
  6. Step 6: Final answer
    x = 38,708.85

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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.