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Finding the Fourth Proportional to 90,898.75, 125,450 and 53,204.59

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Solution

The fourth proportional to 90,898.75, 125,450 and 53,204.59 is: 73,428.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,898.75 : 125,450 = 53,204.59 : x
  2. Step 2: Convert to fraction form
    90,898.75/125,450 = 53,204.59/x
  3. Step 3: Cross multiply
    90,898.75x = 125,450 × 53,204.59
  4. Step 4: Simplify right side
    90,898.75x = 6,674,515,815.50
  5. Step 5: Solve for x
    x = 6,674,515,815.50/90,898.75
  6. Step 6: Final answer
    x = 73,428.03

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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.