Home / 38,728,022.13-53,445,628.92-21,087,891.75

Finding the Fourth Proportional to 38,728,022.13, 53,445,628.92 and 21,087,891.75

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Solution

The fourth proportional to 38,728,022.13, 53,445,628.92 and 21,087,891.75 is: 29,101,812.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,728,022.13 : 53,445,628.92 = 21,087,891.75 : x
  2. Step 2: Convert to fraction form
    38,728,022.13/53,445,628.92 = 21,087,891.75/x
  3. Step 3: Cross multiply
    38,728,022.13x = 53,445,628.92 × 21,087,891.75
  4. Step 4: Simplify right side
    38,728,022.13x = 1,127,055,637,175,629.50
  5. Step 5: Solve for x
    x = 1,127,055,637,175,629.50/38,728,022.13
  6. Step 6: Final answer
    x = 29,101,812.47

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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.