Home / 47,891.71-71,837.57-19,780.86

Finding the Fourth Proportional to 47,891.71, 71,837.57 and 19,780.86

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Solution

The fourth proportional to 47,891.71, 71,837.57 and 19,780.86 is: 29,671.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,891.71 : 71,837.57 = 19,780.86 : x
  2. Step 2: Convert to fraction form
    47,891.71/71,837.57 = 19,780.86/x
  3. Step 3: Cross multiply
    47,891.71x = 71,837.57 × 19,780.86
  4. Step 4: Simplify right side
    47,891.71x = 1,421,009,233.75
  5. Step 5: Solve for x
    x = 1,421,009,233.75/47,891.71
  6. Step 6: Final answer
    x = 29,671.30

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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.