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Finding the Fourth Proportional to 60,576.56, 90,879.96 and 21,134

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Solution

The fourth proportional to 60,576.56, 90,879.96 and 21,134 is: 31,706.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,576.56 : 90,879.96 = 21,134 : x
  2. Step 2: Convert to fraction form
    60,576.56/90,879.96 = 21,134/x
  3. Step 3: Cross multiply
    60,576.56x = 90,879.96 × 21,134
  4. Step 4: Simplify right side
    60,576.56x = 1,920,657,074.64
  5. Step 5: Solve for x
    x = 1,920,657,074.64/60,576.56
  6. Step 6: Final answer
    x = 31,706.28

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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.