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Finding the Fourth Proportional to 65,550, 98,316.63 and 21,172.14

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Solution

The fourth proportional to 65,550, 98,316.63 and 21,172.14 is: 31,755.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,550 : 98,316.63 = 21,172.14 : x
  2. Step 2: Convert to fraction form
    65,550/98,316.63 = 21,172.14/x
  3. Step 3: Cross multiply
    65,550x = 98,316.63 × 21,172.14
  4. Step 4: Simplify right side
    65,550x = 2,081,573,454.69
  5. Step 5: Solve for x
    x = 2,081,573,454.69/65,550
  6. Step 6: Final answer
    x = 31,755.51

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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.