Home / 47,828.80-71,775.60-31,148.20

Finding the Fourth Proportional to 47,828.80, 71,775.60 and 31,148.20

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Solution

The fourth proportional to 47,828.80, 71,775.60 and 31,148.20 is: 46,743.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,828.80 : 71,775.60 = 31,148.20 : x
  2. Step 2: Convert to fraction form
    47,828.80/71,775.60 = 31,148.20/x
  3. Step 3: Cross multiply
    47,828.80x = 71,775.60 × 31,148.20
  4. Step 4: Simplify right side
    47,828.80x = 2,235,680,743.92
  5. Step 5: Solve for x
    x = 2,235,680,743.92/47,828.80
  6. Step 6: Final answer
    x = 46,743.40

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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.