Home / 103,428,906.96-142,732,991.52-57,020,821.64

Finding the Fourth Proportional to 103,428,906.96, 142,732,991.52 and 57,020,821.64

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Solution

The fourth proportional to 103,428,906.96, 142,732,991.52 and 57,020,821.64 is: 78,689,340.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,428,906.96 : 142,732,991.52 = 57,020,821.64 : x
  2. Step 2: Convert to fraction form
    103,428,906.96/142,732,991.52 = 57,020,821.64/x
  3. Step 3: Cross multiply
    103,428,906.96x = 142,732,991.52 × 57,020,821.64
  4. Step 4: Simplify right side
    103,428,906.96x = 8,138,752,450,891,888
  5. Step 5: Solve for x
    x = 8,138,752,450,891,888/103,428,906.96
  6. Step 6: Final answer
    x = 78,689,340.24

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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.