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Finding the Fourth Proportional to 52,702.79, 72,728.90 and 28,829.26

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Solution

The fourth proportional to 52,702.79, 72,728.90 and 28,829.26 is: 39,783.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,702.79 : 72,728.90 = 28,829.26 : x
  2. Step 2: Convert to fraction form
    52,702.79/72,728.90 = 28,829.26/x
  3. Step 3: Cross multiply
    52,702.79x = 72,728.90 × 28,829.26
  4. Step 4: Simplify right side
    52,702.79x = 2,096,720,003.97
  5. Step 5: Solve for x
    x = 2,096,720,003.97/52,702.79
  6. Step 6: Final answer
    x = 39,783.85

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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.