Home / 47,057.98-70,543.65-20,387.21

Finding the Fourth Proportional to 47,057.98, 70,543.65 and 20,387.21

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Solution

The fourth proportional to 47,057.98, 70,543.65 and 20,387.21 is: 30,562.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,057.98 : 70,543.65 = 20,387.21 : x
  2. Step 2: Convert to fraction form
    47,057.98/70,543.65 = 20,387.21/x
  3. Step 3: Cross multiply
    47,057.98x = 70,543.65 × 20,387.21
  4. Step 4: Simplify right side
    47,057.98x = 1,438,188,206.72
  5. Step 5: Solve for x
    x = 1,438,188,206.72/47,057.98
  6. Step 6: Final answer
    x = 30,562.05

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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.