Home / 40,702.39-61,062.34-12,621.86

Finding the Fourth Proportional to 40,702.39, 61,062.34 and 12,621.86

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Solution

The fourth proportional to 40,702.39, 61,062.34 and 12,621.86 is: 18,935.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,702.39 : 61,062.34 = 12,621.86 : x
  2. Step 2: Convert to fraction form
    40,702.39/61,062.34 = 12,621.86/x
  3. Step 3: Cross multiply
    40,702.39x = 61,062.34 × 12,621.86
  4. Step 4: Simplify right side
    40,702.39x = 770,720,306.75
  5. Step 5: Solve for x
    x = 770,720,306.75/40,702.39
  6. Step 6: Final answer
    x = 18,935.50

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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.