Home / 51,560.10-77,348.16-21,978

Finding the Fourth Proportional to 51,560.10, 77,348.16 and 21,978

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Solution

The fourth proportional to 51,560.10, 77,348.16 and 21,978 is: 32,970.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,560.10 : 77,348.16 = 21,978 : x
  2. Step 2: Convert to fraction form
    51,560.10/77,348.16 = 21,978/x
  3. Step 3: Cross multiply
    51,560.10x = 77,348.16 × 21,978
  4. Step 4: Simplify right side
    51,560.10x = 1,699,957,860.48
  5. Step 5: Solve for x
    x = 1,699,957,860.48/51,560.10
  6. Step 6: Final answer
    x = 32,970.41

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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.