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Finding the Fourth Proportional to 52,718.49, 72,751.74 and 28,519.38

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Solution

The fourth proportional to 52,718.49, 72,751.74 and 28,519.38 is: 39,356.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,718.49 : 72,751.74 = 28,519.38 : x
  2. Step 2: Convert to fraction form
    52,718.49/72,751.74 = 28,519.38/x
  3. Step 3: Cross multiply
    52,718.49x = 72,751.74 × 28,519.38
  4. Step 4: Simplify right side
    52,718.49x = 2,074,834,518.72
  5. Step 5: Solve for x
    x = 2,074,834,518.72/52,718.49
  6. Step 6: Final answer
    x = 39,356.87

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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.