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Finding the Fourth Proportional to 39,343.80, 58,929.30 and 34,159.80

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Solution

The fourth proportional to 39,343.80, 58,929.30 and 34,159.80 is: 51,164.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,343.80 : 58,929.30 = 34,159.80 : x
  2. Step 2: Convert to fraction form
    39,343.80/58,929.30 = 34,159.80/x
  3. Step 3: Cross multiply
    39,343.80x = 58,929.30 × 34,159.80
  4. Step 4: Simplify right side
    39,343.80x = 2,013,013,102.14
  5. Step 5: Solve for x
    x = 2,013,013,102.14/39,343.80
  6. Step 6: Final answer
    x = 51,164.68

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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.