Home / 47,879.28-71,785.56-21,210.76

Finding the Fourth Proportional to 47,879.28, 71,785.56 and 21,210.76

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Solution

The fourth proportional to 47,879.28, 71,785.56 and 21,210.76 is: 31,801.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,879.28 : 71,785.56 = 21,210.76 : x
  2. Step 2: Convert to fraction form
    47,879.28/71,785.56 = 21,210.76/x
  3. Step 3: Cross multiply
    47,879.28x = 71,785.56 × 21,210.76
  4. Step 4: Simplify right side
    47,879.28x = 1,522,626,284.63
  5. Step 5: Solve for x
    x = 1,522,626,284.63/47,879.28
  6. Step 6: Final answer
    x = 31,801.36

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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.