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Finding the Fourth Proportional to 67,642.58, 93,361.47 and 39,351.98

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Solution

The fourth proportional to 67,642.58, 93,361.47 and 39,351.98 is: 54,314.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,642.58 : 93,361.47 = 39,351.98 : x
  2. Step 2: Convert to fraction form
    67,642.58/93,361.47 = 39,351.98/x
  3. Step 3: Cross multiply
    67,642.58x = 93,361.47 × 39,351.98
  4. Step 4: Simplify right side
    67,642.58x = 3,673,958,700.21
  5. Step 5: Solve for x
    x = 3,673,958,700.21/67,642.58
  6. Step 6: Final answer
    x = 54,314.29

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1.5x scale

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.