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Finding the Fourth Proportional to 72,455,659.80, 108,654,621.30 and 23,920,006.20

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Solution

The fourth proportional to 72,455,659.80, 108,654,621.30 and 23,920,006.20 is: 35,870,478.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,455,659.80 : 108,654,621.30 = 23,920,006.20 : x
  2. Step 2: Convert to fraction form
    72,455,659.80/108,654,621.30 = 23,920,006.20/x
  3. Step 3: Cross multiply
    72,455,659.80x = 108,654,621.30 × 23,920,006.20
  4. Step 4: Simplify right side
    72,455,659.80x = 2,599,019,215,154,652
  5. Step 5: Solve for x
    x = 2,599,019,215,154,652/72,455,659.80
  6. Step 6: Final answer
    x = 35,870,478.89

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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.