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Finding the Fourth Proportional to 68,070.98, 93,924.09 and 39,771.20

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Solution

The fourth proportional to 68,070.98, 93,924.09 and 39,771.20 is: 54,876.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,070.98 : 93,924.09 = 39,771.20 : x
  2. Step 2: Convert to fraction form
    68,070.98/93,924.09 = 39,771.20/x
  3. Step 3: Cross multiply
    68,070.98x = 93,924.09 × 39,771.20
  4. Step 4: Simplify right side
    68,070.98x = 3,735,474,003.02
  5. Step 5: Solve for x
    x = 3,735,474,003.02/68,070.98
  6. Step 6: Final answer
    x = 54,876.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.