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Finding the Fourth Proportional to 62,918.78, 94,380.32 and 21,360.38

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Solution

The fourth proportional to 62,918.78, 94,380.32 and 21,360.38 is: 32,041.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,918.78 : 94,380.32 = 21,360.38 : x
  2. Step 2: Convert to fraction form
    62,918.78/94,380.32 = 21,360.38/x
  3. Step 3: Cross multiply
    62,918.78x = 94,380.32 × 21,360.38
  4. Step 4: Simplify right side
    62,918.78x = 2,015,999,081.22
  5. Step 5: Solve for x
    x = 2,015,999,081.22/62,918.78
  6. Step 6: Final answer
    x = 32,041.30

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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.