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Finding the Fourth Proportional to 60,660,854, 90,991,281 and 20,271,338

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Solution

The fourth proportional to 60,660,854, 90,991,281 and 20,271,338 is: 30,407,007

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,660,854 : 90,991,281 = 20,271,338 : x
  2. Step 2: Convert to fraction form
    60,660,854/90,991,281 = 20,271,338/x
  3. Step 3: Cross multiply
    60,660,854x = 90,991,281 × 20,271,338
  4. Step 4: Simplify right side
    60,660,854x = 1,844,515,012,203,978
  5. Step 5: Solve for x
    x = 1,844,515,012,203,978/60,660,854
  6. Step 6: Final answer
    x = 30,407,007

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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.