Home / 86,660,145.08-129,988,905.42-21,081,900.32

Finding the Fourth Proportional to 86,660,145.08, 129,988,905.42 and 21,081,900.32

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Solution

The fourth proportional to 86,660,145.08, 129,988,905.42 and 21,081,900.32 is: 31,622,531.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,660,145.08 : 129,988,905.42 = 21,081,900.32 : x
  2. Step 2: Convert to fraction form
    86,660,145.08/129,988,905.42 = 21,081,900.32/x
  3. Step 3: Cross multiply
    86,660,145.08x = 129,988,905.42 × 21,081,900.32
  4. Step 4: Simplify right side
    86,660,145.08x = 2,740,413,146,770,348
  5. Step 5: Solve for x
    x = 2,740,413,146,770,348/86,660,145.08
  6. Step 6: Final answer
    x = 31,622,531.26

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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.