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Finding the Fourth Proportional to 85,551.57, 118,057.75 and 47,308.61

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Solution

The fourth proportional to 85,551.57, 118,057.75 and 47,308.61 is: 65,283.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,551.57 : 118,057.75 = 47,308.61 : x
  2. Step 2: Convert to fraction form
    85,551.57/118,057.75 = 47,308.61/x
  3. Step 3: Cross multiply
    85,551.57x = 118,057.75 × 47,308.61
  4. Step 4: Simplify right side
    85,551.57x = 5,585,147,831.14
  5. Step 5: Solve for x
    x = 5,585,147,831.14/85,551.57
  6. Step 6: Final answer
    x = 65,283.99

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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.