Home / 47,724.21-71,618.31-21,430.80

Finding the Fourth Proportional to 47,724.21, 71,618.31 and 21,430.80

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Solution

The fourth proportional to 47,724.21, 71,618.31 and 21,430.80 is: 32,160.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,724.21 : 71,618.31 = 21,430.80 : x
  2. Step 2: Convert to fraction form
    47,724.21/71,618.31 = 21,430.80/x
  3. Step 3: Cross multiply
    47,724.21x = 71,618.31 × 21,430.80
  4. Step 4: Simplify right side
    47,724.21x = 1,534,837,677.95
  5. Step 5: Solve for x
    x = 1,534,837,677.95/47,724.21
  6. Step 6: Final answer
    x = 32,160.57

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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.