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Finding the Fourth Proportional to 85,611.84, 118,149.60 and 47,888.64

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Solution

The fourth proportional to 85,611.84, 118,149.60 and 47,888.64 is: 66,089.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,611.84 : 118,149.60 = 47,888.64 : x
  2. Step 2: Convert to fraction form
    85,611.84/118,149.60 = 47,888.64/x
  3. Step 3: Cross multiply
    85,611.84x = 118,149.60 × 47,888.64
  4. Step 4: Simplify right side
    85,611.84x = 5,658,023,660.54
  5. Step 5: Solve for x
    x = 5,658,023,660.54/85,611.84
  6. Step 6: Final answer
    x = 66,089.27

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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.