Home / 69,159.86-103,755.34-21,132.66

Finding the Fourth Proportional to 69,159.86, 103,755.34 and 21,132.66

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Solution

The fourth proportional to 69,159.86, 103,755.34 and 21,132.66 is: 31,703.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,159.86 : 103,755.34 = 21,132.66 : x
  2. Step 2: Convert to fraction form
    69,159.86/103,755.34 = 21,132.66/x
  3. Step 3: Cross multiply
    69,159.86x = 103,755.34 × 21,132.66
  4. Step 4: Simplify right side
    69,159.86x = 2,192,626,323.40
  5. Step 5: Solve for x
    x = 2,192,626,323.40/69,159.86
  6. Step 6: Final answer
    x = 31,703.74

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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.