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Finding the Fourth Proportional to 91,989.68, 137,998.84 and 29,666.48

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Solution

The fourth proportional to 91,989.68, 137,998.84 and 29,666.48 is: 44,504.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,989.68 : 137,998.84 = 29,666.48 : x
  2. Step 2: Convert to fraction form
    91,989.68/137,998.84 = 29,666.48/x
  3. Step 3: Cross multiply
    91,989.68x = 137,998.84 × 29,666.48
  4. Step 4: Simplify right side
    91,989.68x = 4,093,939,826.88
  5. Step 5: Solve for x
    x = 4,093,939,826.88/91,989.68
  6. Step 6: Final answer
    x = 44,504.34

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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.