Home / 38,779,508.46-53,515,708.63-21,376,144.32

Finding the Fourth Proportional to 38,779,508.46, 53,515,708.63 and 21,376,144.32

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Solution

The fourth proportional to 38,779,508.46, 53,515,708.63 and 21,376,144.32 is: 29,499,071.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,779,508.46 : 53,515,708.63 = 21,376,144.32 : x
  2. Step 2: Convert to fraction form
    38,779,508.46/53,515,708.63 = 21,376,144.32/x
  3. Step 3: Cross multiply
    38,779,508.46x = 53,515,708.63 × 21,376,144.32
  4. Step 4: Simplify right side
    38,779,508.46x = 1,143,959,511,061,949.50
  5. Step 5: Solve for x
    x = 1,143,959,511,061,949.50/38,779,508.46
  6. Step 6: Final answer
    x = 29,499,071.97

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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.