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Finding the Fourth Proportional to 45,980.15, 68,968.86 and 12,702.21

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Solution

The fourth proportional to 45,980.15, 68,968.86 and 12,702.21 is: 19,052.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,980.15 : 68,968.86 = 12,702.21 : x
  2. Step 2: Convert to fraction form
    45,980.15/68,968.86 = 12,702.21/x
  3. Step 3: Cross multiply
    45,980.15x = 68,968.86 × 12,702.21
  4. Step 4: Simplify right side
    45,980.15x = 876,056,943.18
  5. Step 5: Solve for x
    x = 876,056,943.18/45,980.15
  6. Step 6: Final answer
    x = 19,052.94

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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.