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Finding the Fourth Proportional to 52,980.55, 73,112.79 and 28,781.29

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Solution

The fourth proportional to 52,980.55, 73,112.79 and 28,781.29 is: 39,717.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,980.55 : 73,112.79 = 28,781.29 : x
  2. Step 2: Convert to fraction form
    52,980.55/73,112.79 = 28,781.29/x
  3. Step 3: Cross multiply
    52,980.55x = 73,112.79 × 28,781.29
  4. Step 4: Simplify right side
    52,980.55x = 2,104,280,411.70
  5. Step 5: Solve for x
    x = 2,104,280,411.70/52,980.55
  6. Step 6: Final answer
    x = 39,717.98

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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.