Home / 65,840,007.77-90,859,179.12-39,378,361.14

Finding the Fourth Proportional to 65,840,007.77, 90,859,179.12 and 39,378,361.14

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Solution

The fourth proportional to 65,840,007.77, 90,859,179.12 and 39,378,361.14 is: 54,342,119.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,840,007.77 : 90,859,179.12 = 39,378,361.14 : x
  2. Step 2: Convert to fraction form
    65,840,007.77/90,859,179.12 = 39,378,361.14/x
  3. Step 3: Cross multiply
    65,840,007.77x = 90,859,179.12 × 39,378,361.14
  4. Step 4: Simplify right side
    65,840,007.77x = 3,577,885,567,851,138.50
  5. Step 5: Solve for x
    x = 3,577,885,567,851,138.50/65,840,007.77
  6. Step 6: Final answer
    x = 54,342,119.47

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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.