Home / 85,860,279.70-128,790,419.55-51,422,902.90

Finding the Fourth Proportional to 85,860,279.70, 128,790,419.55 and 51,422,902.90

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Solution

The fourth proportional to 85,860,279.70, 128,790,419.55 and 51,422,902.90 is: 77,134,354.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,860,279.70 : 128,790,419.55 = 51,422,902.90 : x
  2. Step 2: Convert to fraction form
    85,860,279.70/128,790,419.55 = 51,422,902.90/x
  3. Step 3: Cross multiply
    85,860,279.70x = 128,790,419.55 × 51,422,902.90
  4. Step 4: Simplify right side
    85,860,279.70x = 6,622,777,238,969,911
  5. Step 5: Solve for x
    x = 6,622,777,238,969,911/85,860,279.70
  6. Step 6: Final answer
    x = 77,134,354.35

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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.