Home / 38,721,570.45-53,433,738.87-21,314,515.74

Finding the Fourth Proportional to 38,721,570.45, 53,433,738.87 and 21,314,515.74

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Solution

The fourth proportional to 38,721,570.45, 53,433,738.87 and 21,314,515.74 is: 29,412,915.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,721,570.45 : 53,433,738.87 = 21,314,515.74 : x
  2. Step 2: Convert to fraction form
    38,721,570.45/53,433,738.87 = 21,314,515.74/x
  3. Step 3: Cross multiply
    38,721,570.45x = 53,433,738.87 × 21,314,515.74
  4. Step 4: Simplify right side
    38,721,570.45x = 1,138,914,268,191,664.75
  5. Step 5: Solve for x
    x = 1,138,914,268,191,664.75/38,721,570.45
  6. Step 6: Final answer
    x = 29,412,915.20

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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.