Home / 72,876,009.90-109,314,014.85-19,023,321.90

Finding the Fourth Proportional to 72,876,009.90, 109,314,014.85 and 19,023,321.90

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Solution

The fourth proportional to 72,876,009.90, 109,314,014.85 and 19,023,321.90 is: 28,534,982.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,876,009.90 : 109,314,014.85 = 19,023,321.90 : x
  2. Step 2: Convert to fraction form
    72,876,009.90/109,314,014.85 = 19,023,321.90/x
  3. Step 3: Cross multiply
    72,876,009.90x = 109,314,014.85 × 19,023,321.90
  4. Step 4: Simplify right side
    72,876,009.90x = 2,079,515,692,672,930
  5. Step 5: Solve for x
    x = 2,079,515,692,672,930/72,876,009.90
  6. Step 6: Final answer
    x = 28,534,982.85

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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.