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Finding the Fourth Proportional to 68,713.48, 103,070.70 and 21,968.20

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Solution

The fourth proportional to 68,713.48, 103,070.70 and 21,968.20 is: 32,952.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,713.48 : 103,070.70 = 21,968.20 : x
  2. Step 2: Convert to fraction form
    68,713.48/103,070.70 = 21,968.20/x
  3. Step 3: Cross multiply
    68,713.48x = 103,070.70 × 21,968.20
  4. Step 4: Simplify right side
    68,713.48x = 2,264,277,751.74
  5. Step 5: Solve for x
    x = 2,264,277,751.74/68,713.48
  6. Step 6: Final answer
    x = 32,952.45

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1.5x scale

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.