Home / 38,779,508.70-53,515,708.98-21,376,144.56

Finding the Fourth Proportional to 38,779,508.70, 53,515,708.98 and 21,376,144.56

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Solution

The fourth proportional to 38,779,508.70, 53,515,708.98 and 21,376,144.56 is: 29,499,072.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,779,508.70 : 53,515,708.98 = 21,376,144.56 : x
  2. Step 2: Convert to fraction form
    38,779,508.70/53,515,708.98 = 21,376,144.56/x
  3. Step 3: Cross multiply
    38,779,508.70x = 53,515,708.98 × 21,376,144.56
  4. Step 4: Simplify right side
    38,779,508.70x = 1,143,959,531,387,370
  5. Step 5: Solve for x
    x = 1,143,959,531,387,370/38,779,508.70
  6. Step 6: Final answer
    x = 29,499,072.31

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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.