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Finding the Fourth Proportional to 85,885.58, 118,528.98 and 47,648.90

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Solution

The fourth proportional to 85,885.58, 118,528.98 and 47,648.90 is: 65,759.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,885.58 : 118,528.98 = 47,648.90 : x
  2. Step 2: Convert to fraction form
    85,885.58/118,528.98 = 47,648.90/x
  3. Step 3: Cross multiply
    85,885.58x = 118,528.98 × 47,648.90
  4. Step 4: Simplify right side
    85,885.58x = 5,647,775,515.12
  5. Step 5: Solve for x
    x = 5,647,775,515.12/85,885.58
  6. Step 6: Final answer
    x = 65,759.30

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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.