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Finding the Fourth Proportional to 85,809.73, 118,411.45 and 47,568.91

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Solution

The fourth proportional to 85,809.73, 118,411.45 and 47,568.91 is: 65,641.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,809.73 : 118,411.45 = 47,568.91 : x
  2. Step 2: Convert to fraction form
    85,809.73/118,411.45 = 47,568.91/x
  3. Step 3: Cross multiply
    85,809.73x = 118,411.45 × 47,568.91
  4. Step 4: Simplify right side
    85,809.73x = 5,632,703,608.02
  5. Step 5: Solve for x
    x = 5,632,703,608.02/85,809.73
  6. Step 6: Final answer
    x = 65,641.78

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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.