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Finding the Fourth Proportional to 52,762.82, 72,812.67 and 28,889.48

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Solution

The fourth proportional to 52,762.82, 72,812.67 and 28,889.48 is: 39,867.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,762.82 : 72,812.67 = 28,889.48 : x
  2. Step 2: Convert to fraction form
    52,762.82/72,812.67 = 28,889.48/x
  3. Step 3: Cross multiply
    52,762.82x = 72,812.67 × 28,889.48
  4. Step 4: Simplify right side
    52,762.82x = 2,103,520,173.71
  5. Step 5: Solve for x
    x = 2,103,520,173.71/52,762.82
  6. Step 6: Final answer
    x = 39,867.47

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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.