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Finding the Fourth Proportional to 72,929,894.96, 100,674,243.96 and 45,441,404.48

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Solution

The fourth proportional to 72,929,894.96, 100,674,243.96 and 45,441,404.48 is: 62,728,446.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,929,894.96 : 100,674,243.96 = 45,441,404.48 : x
  2. Step 2: Convert to fraction form
    72,929,894.96/100,674,243.96 = 45,441,404.48/x
  3. Step 3: Cross multiply
    72,929,894.96x = 100,674,243.96 × 45,441,404.48
  4. Step 4: Simplify right side
    72,929,894.96x = 4,574,779,040,504,556
  5. Step 5: Solve for x
    x = 4,574,779,040,504,556/72,929,894.96
  6. Step 6: Final answer
    x = 62,728,446.86

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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.