Home / 85,153.20-117,515.04-47,427.45

Finding the Fourth Proportional to 85,153.20, 117,515.04 and 47,427.45

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Solution

The fourth proportional to 85,153.20, 117,515.04 and 47,427.45 is: 65,451.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,153.20 : 117,515.04 = 47,427.45 : x
  2. Step 2: Convert to fraction form
    85,153.20/117,515.04 = 47,427.45/x
  3. Step 3: Cross multiply
    85,153.20x = 117,515.04 × 47,427.45
  4. Step 4: Simplify right side
    85,153.20x = 5,573,438,683.85
  5. Step 5: Solve for x
    x = 5,573,438,683.85/85,153.20
  6. Step 6: Final answer
    x = 65,451.90

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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.