Home / 91,361.35-137,056.80-28,166.69

Finding the Fourth Proportional to 91,361.35, 137,056.80 and 28,166.69

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Solution

The fourth proportional to 91,361.35, 137,056.80 and 28,166.69 is: 42,254.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,361.35 : 137,056.80 = 28,166.69 : x
  2. Step 2: Convert to fraction form
    91,361.35/137,056.80 = 28,166.69/x
  3. Step 3: Cross multiply
    91,361.35x = 137,056.80 × 28,166.69
  4. Step 4: Simplify right side
    91,361.35x = 3,860,436,846.26
  5. Step 5: Solve for x
    x = 3,860,436,846.26/91,361.35
  6. Step 6: Final answer
    x = 42,254.59

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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.