Home / 38,721,616.82-53,433,802.64-21,314,562.12

Finding the Fourth Proportional to 38,721,616.82, 53,433,802.64 and 21,314,562.12

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Solution

The fourth proportional to 38,721,616.82, 53,433,802.64 and 21,314,562.12 is: 29,412,979.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,721,616.82 : 53,433,802.64 = 21,314,562.12 : x
  2. Step 2: Convert to fraction form
    38,721,616.82/53,433,802.64 = 21,314,562.12/x
  3. Step 3: Cross multiply
    38,721,616.82x = 53,433,802.64 × 21,314,562.12
  4. Step 4: Simplify right side
    38,721,616.82x = 1,138,918,105,678,100
  5. Step 5: Solve for x
    x = 1,138,918,105,678,100/38,721,616.82
  6. Step 6: Final answer
    x = 29,412,979.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.