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Finding the Fourth Proportional to 68,643, 94,728.92 and 38,427.56

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Solution

The fourth proportional to 68,643, 94,728.92 and 38,427.56 is: 53,030.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,643 : 94,728.92 = 38,427.56 : x
  2. Step 2: Convert to fraction form
    68,643/94,728.92 = 38,427.56/x
  3. Step 3: Cross multiply
    68,643x = 94,728.92 × 38,427.56
  4. Step 4: Simplify right side
    68,643x = 3,640,201,257.04
  5. Step 5: Solve for x
    x = 3,640,201,257.04/68,643
  6. Step 6: Final answer
    x = 53,030.92

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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.