Home / 70,118,911.71-105,183,654.64-20,930,879.66

Finding the Fourth Proportional to 70,118,911.71, 105,183,654.64 and 20,930,879.66

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Solution

The fourth proportional to 70,118,911.71, 105,183,654.64 and 20,930,879.66 is: 31,397,897.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,118,911.71 : 105,183,654.64 = 20,930,879.66 : x
  2. Step 2: Convert to fraction form
    70,118,911.71/105,183,654.64 = 20,930,879.66/x
  3. Step 3: Cross multiply
    70,118,911.71x = 105,183,654.64 × 20,930,879.66
  4. Step 4: Simplify right side
    70,118,911.71x = 2,201,586,416,890,595.25
  5. Step 5: Solve for x
    x = 2,201,586,416,890,595.25/70,118,911.71
  6. Step 6: Final answer
    x = 31,397,897.70

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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.