Home / 85,146.30-117,505.54-47,420.55

Finding the Fourth Proportional to 85,146.30, 117,505.54 and 47,420.55

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Solution

The fourth proportional to 85,146.30, 117,505.54 and 47,420.55 is: 65,442.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,146.30 : 117,505.54 = 47,420.55 : x
  2. Step 2: Convert to fraction form
    85,146.30/117,505.54 = 47,420.55/x
  3. Step 3: Cross multiply
    85,146.30x = 117,505.54 × 47,420.55
  4. Step 4: Simplify right side
    85,146.30x = 5,572,177,334.85
  5. Step 5: Solve for x
    x = 5,572,177,334.85/85,146.30
  6. Step 6: Final answer
    x = 65,442.39

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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.