Home / 78,163,171.12-107,878,112.94-43,367,071.60

Finding the Fourth Proportional to 78,163,171.12, 107,878,112.94 and 43,367,071.60

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Solution

The fourth proportional to 78,163,171.12, 107,878,112.94 and 43,367,071.60 is: 59,853,736.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,163,171.12 : 107,878,112.94 = 43,367,071.60 : x
  2. Step 2: Convert to fraction form
    78,163,171.12/107,878,112.94 = 43,367,071.60/x
  3. Step 3: Cross multiply
    78,163,171.12x = 107,878,112.94 × 43,367,071.60
  4. Step 4: Simplify right side
    78,163,171.12x = 4,678,357,847,941,867
  5. Step 5: Solve for x
    x = 4,678,357,847,941,867/78,163,171.12
  6. Step 6: Final answer
    x = 59,853,736.50

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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.