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Finding the Fourth Proportional to 90,627.60, 135,811.80 and 62,893.20

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Solution

The fourth proportional to 90,627.60, 135,811.80 and 62,893.20 is: 94,249.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,627.60 : 135,811.80 = 62,893.20 : x
  2. Step 2: Convert to fraction form
    90,627.60/135,811.80 = 62,893.20/x
  3. Step 3: Cross multiply
    90,627.60x = 135,811.80 × 62,893.20
  4. Step 4: Simplify right side
    90,627.60x = 8,541,638,699.76
  5. Step 5: Solve for x
    x = 8,541,638,699.76/90,627.60
  6. Step 6: Final answer
    x = 94,249.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.