Home / 78,404,948.60-108,212,372.06-45,383,404.85

Finding the Fourth Proportional to 78,404,948.60, 108,212,372.06 and 45,383,404.85

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Solution

The fourth proportional to 78,404,948.60, 108,212,372.06 and 45,383,404.85 is: 62,636,937.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,404,948.60 : 108,212,372.06 = 45,383,404.85 : x
  2. Step 2: Convert to fraction form
    78,404,948.60/108,212,372.06 = 45,383,404.85/x
  3. Step 3: Cross multiply
    78,404,948.60x = 108,212,372.06 × 45,383,404.85
  4. Step 4: Simplify right side
    78,404,948.60x = 4,911,045,890,209,830
  5. Step 5: Solve for x
    x = 4,911,045,890,209,830/78,404,948.60
  6. Step 6: Final answer
    x = 62,636,937.82

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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.