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Finding the Fourth Proportional to 65,393.88, 98,074.62 and 18,647.16

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Solution

The fourth proportional to 65,393.88, 98,074.62 and 18,647.16 is: 27,966.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,393.88 : 98,074.62 = 18,647.16 : x
  2. Step 2: Convert to fraction form
    65,393.88/98,074.62 = 18,647.16/x
  3. Step 3: Cross multiply
    65,393.88x = 98,074.62 × 18,647.16
  4. Step 4: Simplify right side
    65,393.88x = 1,828,813,131.08
  5. Step 5: Solve for x
    x = 1,828,813,131.08/65,393.88
  6. Step 6: Final answer
    x = 27,966.12

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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.