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Finding the Fourth Proportional to 51,472.76, 71,029.11 and 28,807.93

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Solution

The fourth proportional to 51,472.76, 71,029.11 and 28,807.93 is: 39,753.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,472.76 : 71,029.11 = 28,807.93 : x
  2. Step 2: Convert to fraction form
    51,472.76/71,029.11 = 28,807.93/x
  3. Step 3: Cross multiply
    51,472.76x = 71,029.11 × 28,807.93
  4. Step 4: Simplify right side
    51,472.76x = 2,046,201,825.66
  5. Step 5: Solve for x
    x = 2,046,201,825.66/51,472.76
  6. Step 6: Final answer
    x = 39,753.10

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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.