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Finding the Fourth Proportional to 91,562,907.40, 137,344,361.10 and 30,978,633.40

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Solution

The fourth proportional to 91,562,907.40, 137,344,361.10 and 30,978,633.40 is: 46,467,950.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,562,907.40 : 137,344,361.10 = 30,978,633.40 : x
  2. Step 2: Convert to fraction form
    91,562,907.40/137,344,361.10 = 30,978,633.40/x
  3. Step 3: Cross multiply
    91,562,907.40x = 137,344,361.10 × 30,978,633.40
  4. Step 4: Simplify right side
    91,562,907.40x = 4,254,740,612,074,120.50
  5. Step 5: Solve for x
    x = 4,254,740,612,074,120.50/91,562,907.40
  6. Step 6: Final answer
    x = 46,467,950.10

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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.