Home / 47,721.80-71,607-19,663.40

Finding the Fourth Proportional to 47,721.80, 71,607 and 19,663.40

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Solution

The fourth proportional to 47,721.80, 71,607 and 19,663.40 is: 29,505.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,721.80 : 71,607 = 19,663.40 : x
  2. Step 2: Convert to fraction form
    47,721.80/71,607 = 19,663.40/x
  3. Step 3: Cross multiply
    47,721.80x = 71,607 × 19,663.40
  4. Step 4: Simplify right side
    47,721.80x = 1,408,037,083.80
  5. Step 5: Solve for x
    x = 1,408,037,083.80/47,721.80
  6. Step 6: Final answer
    x = 29,505.11

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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.