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Finding the Fourth Proportional to 61,259.37, 91,902.13 and 21,279.59

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Solution

The fourth proportional to 61,259.37, 91,902.13 and 21,279.59 is: 31,923.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,259.37 : 91,902.13 = 21,279.59 : x
  2. Step 2: Convert to fraction form
    61,259.37/91,902.13 = 21,279.59/x
  3. Step 3: Cross multiply
    61,259.37x = 91,902.13 × 21,279.59
  4. Step 4: Simplify right side
    61,259.37x = 1,955,639,478.45
  5. Step 5: Solve for x
    x = 1,955,639,478.45/61,259.37
  6. Step 6: Final answer
    x = 31,923.93

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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.