Home / 78,788,013.12-108,713,124.54-55,338,201.27

Finding the Fourth Proportional to 78,788,013.12, 108,713,124.54 and 55,338,201.27

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Solution

The fourth proportional to 78,788,013.12, 108,713,124.54 and 55,338,201.27 is: 76,356,650.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,788,013.12 : 108,713,124.54 = 55,338,201.27 : x
  2. Step 2: Convert to fraction form
    78,788,013.12/108,713,124.54 = 55,338,201.27/x
  3. Step 3: Cross multiply
    78,788,013.12x = 108,713,124.54 × 55,338,201.27
  4. Step 4: Simplify right side
    78,788,013.12x = 6,015,988,766,485,097
  5. Step 5: Solve for x
    x = 6,015,988,766,485,097/78,788,013.12
  6. Step 6: Final answer
    x = 76,356,650.31

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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.