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Finding the Fourth Proportional to 145,853.88, 218,817.71 and 40,672.86

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Solution

The fourth proportional to 145,853.88, 218,817.71 and 40,672.86 is: 61,019.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,853.88 : 218,817.71 = 40,672.86 : x
  2. Step 2: Convert to fraction form
    145,853.88/218,817.71 = 40,672.86/x
  3. Step 3: Cross multiply
    145,853.88x = 218,817.71 × 40,672.86
  4. Step 4: Simplify right side
    145,853.88x = 8,899,942,084.35
  5. Step 5: Solve for x
    x = 8,899,942,084.35/145,853.88
  6. Step 6: Final answer
    x = 61,019.58

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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.