Home / 38,781,053.51-53,517,418.07-21,139,569.81

Finding the Fourth Proportional to 38,781,053.51, 53,517,418.07 and 21,139,569.81

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Solution

The fourth proportional to 38,781,053.51, 53,517,418.07 and 21,139,569.81 is: 29,172,368.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,781,053.51 : 53,517,418.07 = 21,139,569.81 : x
  2. Step 2: Convert to fraction form
    38,781,053.51/53,517,418.07 = 21,139,569.81/x
  3. Step 3: Cross multiply
    38,781,053.51x = 53,517,418.07 × 21,139,569.81
  4. Step 4: Simplify right side
    38,781,053.51x = 1,131,335,195,236,022.50
  5. Step 5: Solve for x
    x = 1,131,335,195,236,022.50/38,781,053.51
  6. Step 6: Final answer
    x = 29,172,368.80

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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.