Home / 87,749,520.21-121,133,446.04-57,998,087.57

Finding the Fourth Proportional to 87,749,520.21, 121,133,446.04 and 57,998,087.57

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Solution

The fourth proportional to 87,749,520.21, 121,133,446.04 and 57,998,087.57 is: 80,063,209.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,749,520.21 : 121,133,446.04 = 57,998,087.57 : x
  2. Step 2: Convert to fraction form
    87,749,520.21/121,133,446.04 = 57,998,087.57/x
  3. Step 3: Cross multiply
    87,749,520.21x = 121,133,446.04 × 57,998,087.57
  4. Step 4: Simplify right side
    87,749,520.21x = 7,025,508,211,531,619
  5. Step 5: Solve for x
    x = 7,025,508,211,531,619/87,749,520.21
  6. Step 6: Final answer
    x = 80,063,209.40

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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.