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Finding the Fourth Proportional to 90,777.60, 136,004.40 and 43,927.20

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Solution

The fourth proportional to 90,777.60, 136,004.40 and 43,927.20 is: 65,812.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,777.60 : 136,004.40 = 43,927.20 : x
  2. Step 2: Convert to fraction form
    90,777.60/136,004.40 = 43,927.20/x
  3. Step 3: Cross multiply
    90,777.60x = 136,004.40 × 43,927.20
  4. Step 4: Simplify right side
    90,777.60x = 5,974,292,479.68
  5. Step 5: Solve for x
    x = 5,974,292,479.68/90,777.60
  6. Step 6: Final answer
    x = 65,812.41

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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.