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Finding the Fourth Proportional to 85,911.93, 118,559.11 and 47,671.63

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Solution

The fourth proportional to 85,911.93, 118,559.11 and 47,671.63 is: 65,787.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,911.93 : 118,559.11 = 47,671.63 : x
  2. Step 2: Convert to fraction form
    85,911.93/118,559.11 = 47,671.63/x
  3. Step 3: Cross multiply
    85,911.93x = 118,559.11 × 47,671.63
  4. Step 4: Simplify right side
    85,911.93x = 5,651,906,025.05
  5. Step 5: Solve for x
    x = 5,651,906,025.05/85,911.93
  6. Step 6: Final answer
    x = 65,787.21

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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.