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Finding the Fourth Proportional to 68,702.40, 94,599.36 and 51,731.28

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Solution

The fourth proportional to 68,702.40, 94,599.36 and 51,731.28 is: 71,231.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,702.40 : 94,599.36 = 51,731.28 : x
  2. Step 2: Convert to fraction form
    68,702.40/94,599.36 = 51,731.28/x
  3. Step 3: Cross multiply
    68,702.40x = 94,599.36 × 51,731.28
  4. Step 4: Simplify right side
    68,702.40x = 4,893,745,979.98
  5. Step 5: Solve for x
    x = 4,893,745,979.98/68,702.40
  6. Step 6: Final answer
    x = 71,231.08

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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.