Home / 80,421,254.08-111,019,878.06-49,507,921.60

Finding the Fourth Proportional to 80,421,254.08, 111,019,878.06 and 49,507,921.60

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Solution

The fourth proportional to 80,421,254.08, 111,019,878.06 and 49,507,921.60 is: 68,344,661.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,421,254.08 : 111,019,878.06 = 49,507,921.60 : x
  2. Step 2: Convert to fraction form
    80,421,254.08/111,019,878.06 = 49,507,921.60/x
  3. Step 3: Cross multiply
    80,421,254.08x = 111,019,878.06 × 49,507,921.60
  4. Step 4: Simplify right side
    80,421,254.08x = 5,496,363,419,036,040
  5. Step 5: Solve for x
    x = 5,496,363,419,036,040/80,421,254.08
  6. Step 6: Final answer
    x = 68,344,661.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.