Home / 38,721,569.90-53,433,738.14-21,314,515.20

Finding the Fourth Proportional to 38,721,569.90, 53,433,738.14 and 21,314,515.20

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Solution

The fourth proportional to 38,721,569.90, 53,433,738.14 and 21,314,515.20 is: 29,412,914.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,721,569.90 : 53,433,738.14 = 21,314,515.20 : x
  2. Step 2: Convert to fraction form
    38,721,569.90/53,433,738.14 = 21,314,515.20/x
  3. Step 3: Cross multiply
    38,721,569.90x = 53,433,738.14 × 21,314,515.20
  4. Step 4: Simplify right side
    38,721,569.90x = 1,138,914,223,777,849.75
  5. Step 5: Solve for x
    x = 1,138,914,223,777,849.75/38,721,569.90
  6. Step 6: Final answer
    x = 29,412,914.47

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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.