Home / 78,019,009.20-117,013,882.73-39,147,024.05

Finding the Fourth Proportional to 78,019,009.20, 117,013,882.73 and 39,147,024.05

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Solution

The fourth proportional to 78,019,009.20, 117,013,882.73 and 39,147,024.05 is: 58,713,194.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,019,009.20 : 117,013,882.73 = 39,147,024.05 : x
  2. Step 2: Convert to fraction form
    78,019,009.20/117,013,882.73 = 39,147,024.05/x
  3. Step 3: Cross multiply
    78,019,009.20x = 117,013,882.73 × 39,147,024.05
  4. Step 4: Simplify right side
    78,019,009.20x = 4,580,745,281,415,189
  5. Step 5: Solve for x
    x = 4,580,745,281,415,189/78,019,009.20
  6. Step 6: Final answer
    x = 58,713,194.75

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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.