Home / 78,003,425.70-117,005,138.55-65,462,292.90

Finding the Fourth Proportional to 78,003,425.70, 117,005,138.55 and 65,462,292.90

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Solution

The fourth proportional to 78,003,425.70, 117,005,138.55 and 65,462,292.90 is: 98,193,439.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,003,425.70 : 117,005,138.55 = 65,462,292.90 : x
  2. Step 2: Convert to fraction form
    78,003,425.70/117,005,138.55 = 65,462,292.90/x
  3. Step 3: Cross multiply
    78,003,425.70x = 117,005,138.55 × 65,462,292.90
  4. Step 4: Simplify right side
    78,003,425.70x = 7,659,424,650,565,181
  5. Step 5: Solve for x
    x = 7,659,424,650,565,181/78,003,425.70
  6. Step 6: Final answer
    x = 98,193,439.35

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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.