Home / 78,003,431.70-117,005,147.55-65,462,298.90

Finding the Fourth Proportional to 78,003,431.70, 117,005,147.55 and 65,462,298.90

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Solution

The fourth proportional to 78,003,431.70, 117,005,147.55 and 65,462,298.90 is: 98,193,448.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,003,431.70 : 117,005,147.55 = 65,462,298.90 : x
  2. Step 2: Convert to fraction form
    78,003,431.70/117,005,147.55 = 65,462,298.90/x
  3. Step 3: Cross multiply
    78,003,431.70x = 117,005,147.55 × 65,462,298.90
  4. Step 4: Simplify right side
    78,003,431.70x = 7,659,425,941,756,702
  5. Step 5: Solve for x
    x = 7,659,425,941,756,702/78,003,431.70
  6. Step 6: Final answer
    x = 98,193,448.35

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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.