Home / 78,011,404.90-117,024,849.54-28,840,147.14

Finding the Fourth Proportional to 78,011,404.90, 117,024,849.54 and 28,840,147.14

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Solution

The fourth proportional to 78,011,404.90, 117,024,849.54 and 28,840,147.14 is: 43,263,082.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,011,404.90 : 117,024,849.54 = 28,840,147.14 : x
  2. Step 2: Convert to fraction form
    78,011,404.90/117,024,849.54 = 28,840,147.14/x
  3. Step 3: Cross multiply
    78,011,404.90x = 117,024,849.54 × 28,840,147.14
  4. Step 4: Simplify right side
    78,011,404.90x = 3,375,013,879,769,961.50
  5. Step 5: Solve for x
    x = 3,375,013,879,769,961.50/78,011,404.90
  6. Step 6: Final answer
    x = 43,263,082.93

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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.