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Finding the Fourth Proportional to 68,605.49, 94,679.57 and 38,390.57

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Solution

The fourth proportional to 68,605.49, 94,679.57 and 38,390.57 is: 52,981.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,605.49 : 94,679.57 = 38,390.57 : x
  2. Step 2: Convert to fraction form
    68,605.49/94,679.57 = 38,390.57/x
  3. Step 3: Cross multiply
    68,605.49x = 94,679.57 × 38,390.57
  4. Step 4: Simplify right side
    68,605.49x = 3,634,802,637.28
  5. Step 5: Solve for x
    x = 3,634,802,637.28/68,605.49
  6. Step 6: Final answer
    x = 52,981.22

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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.