Home / 78,116,551.74-117,179,699.49-20,608,878.06

Finding the Fourth Proportional to 78,116,551.74, 117,179,699.49 and 20,608,878.06

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Solution

The fourth proportional to 78,116,551.74, 117,179,699.49 and 20,608,878.06 is: 30,914,602.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,116,551.74 : 117,179,699.49 = 20,608,878.06 : x
  2. Step 2: Convert to fraction form
    78,116,551.74/117,179,699.49 = 20,608,878.06/x
  3. Step 3: Cross multiply
    78,116,551.74x = 117,179,699.49 × 20,608,878.06
  4. Step 4: Simplify right side
    78,116,551.74x = 2,414,942,137,896,854
  5. Step 5: Solve for x
    x = 2,414,942,137,896,854/78,116,551.74
  6. Step 6: Final answer
    x = 30,914,602.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.