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Finding the Fourth Proportional to 65,404, 98,106.92 and 18,656.88

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Solution

The fourth proportional to 65,404, 98,106.92 and 18,656.88 is: 27,985.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,404 : 98,106.92 = 18,656.88 : x
  2. Step 2: Convert to fraction form
    65,404/98,106.92 = 18,656.88/x
  3. Step 3: Cross multiply
    65,404x = 98,106.92 × 18,656.88
  4. Step 4: Simplify right side
    65,404x = 1,830,369,033.61
  5. Step 5: Solve for x
    x = 1,830,369,033.61/65,404
  6. Step 6: Final answer
    x = 27,985.58

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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.