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Finding the Fourth Proportional to 102,893.76, 141,995.52 and 57,572.64

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Solution

The fourth proportional to 102,893.76, 141,995.52 and 57,572.64 is: 79,451.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,893.76 : 141,995.52 = 57,572.64 : x
  2. Step 2: Convert to fraction form
    102,893.76/141,995.52 = 57,572.64/x
  3. Step 3: Cross multiply
    102,893.76x = 141,995.52 × 57,572.64
  4. Step 4: Simplify right side
    102,893.76x = 8,175,056,954.57
  5. Step 5: Solve for x
    x = 8,175,056,954.57/102,893.76
  6. Step 6: Final answer
    x = 79,451.44

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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.