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Finding the Fourth Proportional to 52,688.52, 72,709.14 and 28,815.12

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Solution

The fourth proportional to 52,688.52, 72,709.14 and 28,815.12 is: 39,764.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,688.52 : 72,709.14 = 28,815.12 : x
  2. Step 2: Convert to fraction form
    52,688.52/72,709.14 = 28,815.12/x
  3. Step 3: Cross multiply
    52,688.52x = 72,709.14 × 28,815.12
  4. Step 4: Simplify right side
    52,688.52x = 2,095,122,594.20
  5. Step 5: Solve for x
    x = 2,095,122,594.20/52,688.52
  6. Step 6: Final answer
    x = 39,764.31

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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.