Home / 85,915.15-118,563.56-47,674.85

Finding the Fourth Proportional to 85,915.15, 118,563.56 and 47,674.85

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Solution

The fourth proportional to 85,915.15, 118,563.56 and 47,674.85 is: 65,791.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,915.15 : 118,563.56 = 47,674.85 : x
  2. Step 2: Convert to fraction form
    85,915.15/118,563.56 = 47,674.85/x
  3. Step 3: Cross multiply
    85,915.15x = 118,563.56 × 47,674.85
  4. Step 4: Simplify right side
    85,915.15x = 5,652,499,554.23
  5. Step 5: Solve for x
    x = 5,652,499,554.23/85,915.15
  6. Step 6: Final answer
    x = 65,791.65

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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.