Home / 86,660,149.30-129,988,911.76-21,081,904.54

Finding the Fourth Proportional to 86,660,149.30, 129,988,911.76 and 21,081,904.54

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Solution

The fourth proportional to 86,660,149.30, 129,988,911.76 and 21,081,904.54 is: 31,622,537.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,660,149.30 : 129,988,911.76 = 21,081,904.54 : x
  2. Step 2: Convert to fraction form
    86,660,149.30/129,988,911.76 = 21,081,904.54/x
  3. Step 3: Cross multiply
    86,660,149.30x = 129,988,911.76 × 21,081,904.54
  4. Step 4: Simplify right side
    86,660,149.30x = 2,740,413,828,982,803.50
  5. Step 5: Solve for x
    x = 2,740,413,828,982,803.50/86,660,149.30
  6. Step 6: Final answer
    x = 31,622,537.59

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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.