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Finding the Fourth Proportional to 39,290.40, 58,801.20 and 23,719.20

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Solution

The fourth proportional to 39,290.40, 58,801.20 and 23,719.20 is: 35,497.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,290.40 : 58,801.20 = 23,719.20 : x
  2. Step 2: Convert to fraction form
    39,290.40/58,801.20 = 23,719.20/x
  3. Step 3: Cross multiply
    39,290.40x = 58,801.20 × 23,719.20
  4. Step 4: Simplify right side
    39,290.40x = 1,394,717,423.04
  5. Step 5: Solve for x
    x = 1,394,717,423.04/39,290.40
  6. Step 6: Final answer
    x = 35,497.66

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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.