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Finding the Fourth Proportional to 65,717.40, 98,600.40 and 21,345.60

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Solution

The fourth proportional to 65,717.40, 98,600.40 and 21,345.60 is: 32,026.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,717.40 : 98,600.40 = 21,345.60 : x
  2. Step 2: Convert to fraction form
    65,717.40/98,600.40 = 21,345.60/x
  3. Step 3: Cross multiply
    65,717.40x = 98,600.40 × 21,345.60
  4. Step 4: Simplify right side
    65,717.40x = 2,104,684,698.24
  5. Step 5: Solve for x
    x = 2,104,684,698.24/65,717.40
  6. Step 6: Final answer
    x = 32,026.29

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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.