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Finding the Fourth Proportional to 90,450.64, 135,648.32 and 62,550

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Solution

The fourth proportional to 90,450.64, 135,648.32 and 62,550 is: 93,805.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,450.64 : 135,648.32 = 62,550 : x
  2. Step 2: Convert to fraction form
    90,450.64/135,648.32 = 62,550/x
  3. Step 3: Cross multiply
    90,450.64x = 135,648.32 × 62,550
  4. Step 4: Simplify right side
    90,450.64x = 8,484,802,416
  5. Step 5: Solve for x
    x = 8,484,802,416/90,450.64
  6. Step 6: Final answer
    x = 93,805.89

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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.