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Finding the Fourth Proportional to 68,894.88, 103,515.36 and 43,946.40

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Solution

The fourth proportional to 68,894.88, 103,515.36 and 43,946.40 is: 66,029.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,894.88 : 103,515.36 = 43,946.40 : x
  2. Step 2: Convert to fraction form
    68,894.88/103,515.36 = 43,946.40/x
  3. Step 3: Cross multiply
    68,894.88x = 103,515.36 × 43,946.40
  4. Step 4: Simplify right side
    68,894.88x = 4,549,127,416.70
  5. Step 5: Solve for x
    x = 4,549,127,416.70/68,894.88
  6. Step 6: Final answer
    x = 66,029.98

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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.