Home / 72,761,335.80-109,142,003.70-43,661,988.60

Finding the Fourth Proportional to 72,761,335.80, 109,142,003.70 and 43,661,988.60

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Solution

The fourth proportional to 72,761,335.80, 109,142,003.70 and 43,661,988.60 is: 65,492,982.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,761,335.80 : 109,142,003.70 = 43,661,988.60 : x
  2. Step 2: Convert to fraction form
    72,761,335.80/109,142,003.70 = 43,661,988.60/x
  3. Step 3: Cross multiply
    72,761,335.80x = 109,142,003.70 × 43,661,988.60
  4. Step 4: Simplify right side
    72,761,335.80x = 4,765,356,921,330,558
  5. Step 5: Solve for x
    x = 4,765,356,921,330,558/72,761,335.80
  6. Step 6: Final answer
    x = 65,492,982.90

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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.