Home / 72,158,173.98-108,225,739.17-21,028,232.94

Finding the Fourth Proportional to 72,158,173.98, 108,225,739.17 and 21,028,232.94

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Solution

The fourth proportional to 72,158,173.98, 108,225,739.17 and 21,028,232.94 is: 31,538,991.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,158,173.98 : 108,225,739.17 = 21,028,232.94 : x
  2. Step 2: Convert to fraction form
    72,158,173.98/108,225,739.17 = 21,028,232.94/x
  3. Step 3: Cross multiply
    72,158,173.98x = 108,225,739.17 × 21,028,232.94
  4. Step 4: Simplify right side
    72,158,173.98x = 2,275,796,053,370,442.50
  5. Step 5: Solve for x
    x = 2,275,796,053,370,442.50/72,158,173.98
  6. Step 6: Final answer
    x = 31,538,991.74

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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.