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Finding the Fourth Proportional to 43,887.80, 65,831.70 and 35,139.80

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Solution

The fourth proportional to 43,887.80, 65,831.70 and 35,139.80 is: 52,709.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,887.80 : 65,831.70 = 35,139.80 : x
  2. Step 2: Convert to fraction form
    43,887.80/65,831.70 = 35,139.80/x
  3. Step 3: Cross multiply
    43,887.80x = 65,831.70 × 35,139.80
  4. Step 4: Simplify right side
    43,887.80x = 2,313,312,771.66
  5. Step 5: Solve for x
    x = 2,313,312,771.66/43,887.80
  6. Step 6: Final answer
    x = 52,709.70

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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.