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Finding the Fourth Proportional to 35,475.50, 48,934.50 and 21,125.78

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Solution

The fourth proportional to 35,475.50, 48,934.50 and 21,125.78 is: 29,140.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,475.50 : 48,934.50 = 21,125.78 : x
  2. Step 2: Convert to fraction form
    35,475.50/48,934.50 = 21,125.78/x
  3. Step 3: Cross multiply
    35,475.50x = 48,934.50 × 21,125.78
  4. Step 4: Simplify right side
    35,475.50x = 1,033,779,481.41
  5. Step 5: Solve for x
    x = 1,033,779,481.41/35,475.50
  6. Step 6: Final answer
    x = 29,140.66

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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.