Home / 72,580,809.20-108,871,213.80-18,728,121.20

Finding the Fourth Proportional to 72,580,809.20, 108,871,213.80 and 18,728,121.20

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Solution

The fourth proportional to 72,580,809.20, 108,871,213.80 and 18,728,121.20 is: 28,092,181.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,580,809.20 : 108,871,213.80 = 18,728,121.20 : x
  2. Step 2: Convert to fraction form
    72,580,809.20/108,871,213.80 = 18,728,121.20/x
  3. Step 3: Cross multiply
    72,580,809.20x = 108,871,213.80 × 18,728,121.20
  4. Step 4: Simplify right side
    72,580,809.20x = 2,038,953,287,237,512.50
  5. Step 5: Solve for x
    x = 2,038,953,287,237,512.50/72,580,809.20
  6. Step 6: Final answer
    x = 28,092,181.80

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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.