Home / 78,356,164.40-117,534,246.60-56,857,079.60

Finding the Fourth Proportional to 78,356,164.40, 117,534,246.60 and 56,857,079.60

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Solution

The fourth proportional to 78,356,164.40, 117,534,246.60 and 56,857,079.60 is: 85,285,619.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,356,164.40 : 117,534,246.60 = 56,857,079.60 : x
  2. Step 2: Convert to fraction form
    78,356,164.40/117,534,246.60 = 56,857,079.60/x
  3. Step 3: Cross multiply
    78,356,164.40x = 117,534,246.60 × 56,857,079.60
  4. Step 4: Simplify right side
    78,356,164.40x = 6,682,654,014,662,229
  5. Step 5: Solve for x
    x = 6,682,654,014,662,229/78,356,164.40
  6. Step 6: Final answer
    x = 85,285,619.40

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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.