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Finding the Fourth Proportional to 51,472.69, 71,026.30 and 28,812.94

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Solution

The fourth proportional to 51,472.69, 71,026.30 and 28,812.94 is: 39,758.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,472.69 : 71,026.30 = 28,812.94 : x
  2. Step 2: Convert to fraction form
    51,472.69/71,026.30 = 28,812.94/x
  3. Step 3: Cross multiply
    51,472.69x = 71,026.30 × 28,812.94
  4. Step 4: Simplify right side
    51,472.69x = 2,046,476,520.32
  5. Step 5: Solve for x
    x = 2,046,476,520.32/51,472.69
  6. Step 6: Final answer
    x = 39,758.49

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1.5x scale

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.