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Finding the Fourth Proportional to 91,941, 137,911.51 and 29,611.50

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Solution

The fourth proportional to 91,941, 137,911.51 and 29,611.50 is: 44,417.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,941 : 137,911.51 = 29,611.50 : x
  2. Step 2: Convert to fraction form
    91,941/137,911.51 = 29,611.50/x
  3. Step 3: Cross multiply
    91,941x = 137,911.51 × 29,611.50
  4. Step 4: Simplify right side
    91,941x = 4,083,766,604.34
  5. Step 5: Solve for x
    x = 4,083,766,604.34/91,941
  6. Step 6: Final answer
    x = 44,417.25

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1.5x scale

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.