Home / 78,336,002.60-117,504,003.90-69,601,999.40

Finding the Fourth Proportional to 78,336,002.60, 117,504,003.90 and 69,601,999.40

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Solution

The fourth proportional to 78,336,002.60, 117,504,003.90 and 69,601,999.40 is: 104,402,999.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,336,002.60 : 117,504,003.90 = 69,601,999.40 : x
  2. Step 2: Convert to fraction form
    78,336,002.60/117,504,003.90 = 69,601,999.40/x
  3. Step 3: Cross multiply
    78,336,002.60x = 117,504,003.90 × 69,601,999.40
  4. Step 4: Simplify right side
    78,336,002.60x = 8,178,513,608,945,399
  5. Step 5: Solve for x
    x = 8,178,513,608,945,399/78,336,002.60
  6. Step 6: Final answer
    x = 104,402,999.10

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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.