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Finding the Fourth Proportional to 52,781.92, 72,836.34 and 28,903.98

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Solution

The fourth proportional to 52,781.92, 72,836.34 and 28,903.98 is: 39,886.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,781.92 : 72,836.34 = 28,903.98 : x
  2. Step 2: Convert to fraction form
    52,781.92/72,836.34 = 28,903.98/x
  3. Step 3: Cross multiply
    52,781.92x = 72,836.34 × 28,903.98
  4. Step 4: Simplify right side
    52,781.92x = 2,105,260,114.63
  5. Step 5: Solve for x
    x = 2,105,260,114.63/52,781.92
  6. Step 6: Final answer
    x = 39,886.01

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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.