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Finding the Fourth Proportional to 65,863,015.79, 90,890,872.63 and 36,496,250.12

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Solution

The fourth proportional to 65,863,015.79, 90,890,872.63 and 36,496,250.12 is: 50,364,775.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,863,015.79 : 90,890,872.63 = 36,496,250.12 : x
  2. Step 2: Convert to fraction form
    65,863,015.79/90,890,872.63 = 36,496,250.12/x
  3. Step 3: Cross multiply
    65,863,015.79x = 90,890,872.63 × 36,496,250.12
  4. Step 4: Simplify right side
    65,863,015.79x = 3,317,176,021,265,529
  5. Step 5: Solve for x
    x = 3,317,176,021,265,529/65,863,015.79
  6. Step 6: Final answer
    x = 50,364,775.77

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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.