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Finding the Fourth Proportional to 72,001.60, 107,951.20 and 27,611.20

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Solution

The fourth proportional to 72,001.60, 107,951.20 and 27,611.20 is: 41,397.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,001.60 : 107,951.20 = 27,611.20 : x
  2. Step 2: Convert to fraction form
    72,001.60/107,951.20 = 27,611.20/x
  3. Step 3: Cross multiply
    72,001.60x = 107,951.20 × 27,611.20
  4. Step 4: Simplify right side
    72,001.60x = 2,980,662,173.44
  5. Step 5: Solve for x
    x = 2,980,662,173.44/72,001.60
  6. Step 6: Final answer
    x = 41,397.17

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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.