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Finding the Fourth Proportional to 90,755.99, 125,225.33 and 54,949.34

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Solution

The fourth proportional to 90,755.99, 125,225.33 and 54,949.34 is: 75,819.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,755.99 : 125,225.33 = 54,949.34 : x
  2. Step 2: Convert to fraction form
    90,755.99/125,225.33 = 54,949.34/x
  3. Step 3: Cross multiply
    90,755.99x = 125,225.33 × 54,949.34
  4. Step 4: Simplify right side
    90,755.99x = 6,881,048,746.03
  5. Step 5: Solve for x
    x = 6,881,048,746.03/90,755.99
  6. Step 6: Final answer
    x = 75,819.22

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1.5x scale

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.