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Finding the Fourth Proportional to 34,898.88, 48,141.36 and 21,290.88

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Solution

The fourth proportional to 34,898.88, 48,141.36 and 21,290.88 is: 29,369.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,898.88 : 48,141.36 = 21,290.88 : x
  2. Step 2: Convert to fraction form
    34,898.88/48,141.36 = 21,290.88/x
  3. Step 3: Cross multiply
    34,898.88x = 48,141.36 × 21,290.88
  4. Step 4: Simplify right side
    34,898.88x = 1,024,971,918.80
  5. Step 5: Solve for x
    x = 1,024,971,918.80/34,898.88
  6. Step 6: Final answer
    x = 29,369.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.