Home / 78,040,245.50-117,035,557.05-72,945,485.18

Finding the Fourth Proportional to 78,040,245.50, 117,035,557.05 and 72,945,485.18

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Solution

The fourth proportional to 78,040,245.50, 117,035,557.05 and 72,945,485.18 is: 109,395,036.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,040,245.50 : 117,035,557.05 = 72,945,485.18 : x
  2. Step 2: Convert to fraction form
    78,040,245.50/117,035,557.05 = 72,945,485.18/x
  3. Step 3: Cross multiply
    78,040,245.50x = 117,035,557.05 × 72,945,485.18
  4. Step 4: Simplify right side
    78,040,245.50x = 8,537,215,492,323,820
  5. Step 5: Solve for x
    x = 8,537,215,492,323,820/78,040,245.50
  6. Step 6: Final answer
    x = 109,395,036.34

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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.