Home / 85,147.80-117,504.20-47,421.96

Finding the Fourth Proportional to 85,147.80, 117,504.20 and 47,421.96

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Solution

The fourth proportional to 85,147.80, 117,504.20 and 47,421.96 is: 65,442.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,147.80 : 117,504.20 = 47,421.96 : x
  2. Step 2: Convert to fraction form
    85,147.80/117,504.20 = 47,421.96/x
  3. Step 3: Cross multiply
    85,147.80x = 117,504.20 × 47,421.96
  4. Step 4: Simplify right side
    85,147.80x = 5,572,279,472.23
  5. Step 5: Solve for x
    x = 5,572,279,472.23/85,147.80
  6. Step 6: Final answer
    x = 65,442.44

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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.