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Finding the Fourth Proportional to 77,256.60, 115,806.06 and 43,906.20

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Solution

The fourth proportional to 77,256.60, 115,806.06 and 43,906.20 is: 65,814.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,256.60 : 115,806.06 = 43,906.20 : x
  2. Step 2: Convert to fraction form
    77,256.60/115,806.06 = 43,906.20/x
  3. Step 3: Cross multiply
    77,256.60x = 115,806.06 × 43,906.20
  4. Step 4: Simplify right side
    77,256.60x = 5,084,604,031.57
  5. Step 5: Solve for x
    x = 5,084,604,031.57/77,256.60
  6. Step 6: Final answer
    x = 65,814.49

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1.5x scale

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.