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Finding the Fourth Proportional to 36,702.40, 55,010.40 and 15,642.40

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Solution

The fourth proportional to 36,702.40, 55,010.40 and 15,642.40 is: 23,445.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,702.40 : 55,010.40 = 15,642.40 : x
  2. Step 2: Convert to fraction form
    36,702.40/55,010.40 = 15,642.40/x
  3. Step 3: Cross multiply
    36,702.40x = 55,010.40 × 15,642.40
  4. Step 4: Simplify right side
    36,702.40x = 860,494,680.96
  5. Step 5: Solve for x
    x = 860,494,680.96/36,702.40
  6. Step 6: Final answer
    x = 23,445.19

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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.