Home / 78,147,609.99-117,065,109.38-47,006,070.90

Finding the Fourth Proportional to 78,147,609.99, 117,065,109.38 and 47,006,070.90

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Solution

The fourth proportional to 78,147,609.99, 117,065,109.38 and 47,006,070.90 is: 70,415,087.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,147,609.99 : 117,065,109.38 = 47,006,070.90 : x
  2. Step 2: Convert to fraction form
    78,147,609.99/117,065,109.38 = 47,006,070.90/x
  3. Step 3: Cross multiply
    78,147,609.99x = 117,065,109.38 × 47,006,070.90
  4. Step 4: Simplify right side
    78,147,609.99x = 5,502,770,831,197,505
  5. Step 5: Solve for x
    x = 5,502,770,831,197,505/78,147,609.99
  6. Step 6: Final answer
    x = 70,415,087.96

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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.