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Finding the Fourth Proportional to 61,138.56, 91,688.88 and 29,528.98

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Solution

The fourth proportional to 61,138.56, 91,688.88 and 29,528.98 is: 44,284.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,138.56 : 91,688.88 = 29,528.98 : x
  2. Step 2: Convert to fraction form
    61,138.56/91,688.88 = 29,528.98/x
  3. Step 3: Cross multiply
    61,138.56x = 91,688.88 × 29,528.98
  4. Step 4: Simplify right side
    61,138.56x = 2,707,479,103.74
  5. Step 5: Solve for x
    x = 2,707,479,103.74/61,138.56
  6. Step 6: Final answer
    x = 44,284.31

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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.