Home / 42,718,161.72-64,080,231.60-21,146,971.56

Finding the Fourth Proportional to 42,718,161.72, 64,080,231.60 and 21,146,971.56

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Solution

The fourth proportional to 42,718,161.72, 64,080,231.60 and 21,146,971.56 is: 31,721,937.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,718,161.72 : 64,080,231.60 = 21,146,971.56 : x
  2. Step 2: Convert to fraction form
    42,718,161.72/64,080,231.60 = 21,146,971.56/x
  3. Step 3: Cross multiply
    42,718,161.72x = 64,080,231.60 × 21,146,971.56
  4. Step 4: Simplify right side
    42,718,161.72x = 1,355,102,835,203,413.25
  5. Step 5: Solve for x
    x = 1,355,102,835,203,413.25/42,718,161.72
  6. Step 6: Final answer
    x = 31,721,937.01

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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.