Home / 30,631,965.30-42,274,203.17-18,715,880.75

Finding the Fourth Proportional to 30,631,965.30, 42,274,203.17 and 18,715,880.75

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Solution

The fourth proportional to 30,631,965.30, 42,274,203.17 and 18,715,880.75 is: 25,829,193.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,631,965.30 : 42,274,203.17 = 18,715,880.75 : x
  2. Step 2: Convert to fraction form
    30,631,965.30/42,274,203.17 = 18,715,880.75/x
  3. Step 3: Cross multiply
    30,631,965.30x = 42,274,203.17 × 18,715,880.75
  4. Step 4: Simplify right side
    30,631,965.30x = 791,198,945,026,041.62
  5. Step 5: Solve for x
    x = 791,198,945,026,041.62/30,631,965.30
  6. Step 6: Final answer
    x = 25,829,193.04

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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.