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Finding the Fourth Proportional to 52,684.80, 72,706.68 and 28,812.12

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Solution

The fourth proportional to 52,684.80, 72,706.68 and 28,812.12 is: 39,761.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,684.80 : 72,706.68 = 28,812.12 : x
  2. Step 2: Convert to fraction form
    52,684.80/72,706.68 = 28,812.12/x
  3. Step 3: Cross multiply
    52,684.80x = 72,706.68 × 28,812.12
  4. Step 4: Simplify right side
    52,684.80x = 2,094,833,588.96
  5. Step 5: Solve for x
    x = 2,094,833,588.96/52,684.80
  6. Step 6: Final answer
    x = 39,761.63

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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.