Home / 80,861,531.70-121,209,628.95-39,857,906.10

Finding the Fourth Proportional to 80,861,531.70, 121,209,628.95 and 39,857,906.10

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Solution

The fourth proportional to 80,861,531.70, 121,209,628.95 and 39,857,906.10 is: 59,746,110.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,861,531.70 : 121,209,628.95 = 39,857,906.10 : x
  2. Step 2: Convert to fraction form
    80,861,531.70/121,209,628.95 = 39,857,906.10/x
  3. Step 3: Cross multiply
    80,861,531.70x = 121,209,628.95 × 39,857,906.10
  4. Step 4: Simplify right side
    80,861,531.70x = 4,831,162,009,104,942
  5. Step 5: Solve for x
    x = 4,831,162,009,104,942/80,861,531.70
  6. Step 6: Final answer
    x = 59,746,110.51

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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.