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Finding the Fourth Proportional to 90,748.31, 125,214.23 and 53,015.27

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Solution

The fourth proportional to 90,748.31, 125,214.23 and 53,015.27 is: 73,150.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,748.31 : 125,214.23 = 53,015.27 : x
  2. Step 2: Convert to fraction form
    90,748.31/125,214.23 = 53,015.27/x
  3. Step 3: Cross multiply
    90,748.31x = 125,214.23 × 53,015.27
  4. Step 4: Simplify right side
    90,748.31x = 6,638,265,946.22
  5. Step 5: Solve for x
    x = 6,638,265,946.22/90,748.31
  6. Step 6: Final answer
    x = 73,150.30

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.