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Finding the Fourth Proportional to 65,970.33, 98,918.64 and 21,585.17

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Solution

The fourth proportional to 65,970.33, 98,918.64 and 21,585.17 is: 32,365.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,970.33 : 98,918.64 = 21,585.17 : x
  2. Step 2: Convert to fraction form
    65,970.33/98,918.64 = 21,585.17/x
  3. Step 3: Cross multiply
    65,970.33x = 98,918.64 × 21,585.17
  4. Step 4: Simplify right side
    65,970.33x = 2,135,175,165.98
  5. Step 5: Solve for x
    x = 2,135,175,165.98/65,970.33
  6. Step 6: Final answer
    x = 32,365.69

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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.