Home / 47,830.80-71,778.60-31,150.20

Finding the Fourth Proportional to 47,830.80, 71,778.60 and 31,150.20

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Solution

The fourth proportional to 47,830.80, 71,778.60 and 31,150.20 is: 46,746.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,830.80 : 71,778.60 = 31,150.20 : x
  2. Step 2: Convert to fraction form
    47,830.80/71,778.60 = 31,150.20/x
  3. Step 3: Cross multiply
    47,830.80x = 71,778.60 × 31,150.20
  4. Step 4: Simplify right side
    47,830.80x = 2,235,917,745.72
  5. Step 5: Solve for x
    x = 2,235,917,745.72/47,830.80
  6. Step 6: Final answer
    x = 46,746.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.