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Finding the Fourth Proportional to 29,141.80, 43,712.70 and 19,810.60

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Solution

The fourth proportional to 29,141.80, 43,712.70 and 19,810.60 is: 29,715.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,141.80 : 43,712.70 = 19,810.60 : x
  2. Step 2: Convert to fraction form
    29,141.80/43,712.70 = 19,810.60/x
  3. Step 3: Cross multiply
    29,141.80x = 43,712.70 × 19,810.60
  4. Step 4: Simplify right side
    29,141.80x = 865,974,814.62
  5. Step 5: Solve for x
    x = 865,974,814.62/29,141.80
  6. Step 6: Final answer
    x = 29,715.90

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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.