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Finding the Fourth Proportional to 56,472.48, 84,731.04 and 21,421.44

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Solution

The fourth proportional to 56,472.48, 84,731.04 and 21,421.44 is: 32,140.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,472.48 : 84,731.04 = 21,421.44 : x
  2. Step 2: Convert to fraction form
    56,472.48/84,731.04 = 21,421.44/x
  3. Step 3: Cross multiply
    56,472.48x = 84,731.04 × 21,421.44
  4. Step 4: Simplify right side
    56,472.48x = 1,815,060,889.50
  5. Step 5: Solve for x
    x = 1,815,060,889.50/56,472.48
  6. Step 6: Final answer
    x = 32,140.63

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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.