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Finding the Fourth Proportional to 91,998.90, 137,922.93 and 47,638.29

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Solution

The fourth proportional to 91,998.90, 137,922.93 and 47,638.29 is: 71,418.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,998.90 : 137,922.93 = 47,638.29 : x
  2. Step 2: Convert to fraction form
    91,998.90/137,922.93 = 47,638.29/x
  3. Step 3: Cross multiply
    91,998.90x = 137,922.93 × 47,638.29
  4. Step 4: Simplify right side
    91,998.90x = 6,570,412,536.99
  5. Step 5: Solve for x
    x = 6,570,412,536.99/91,998.90
  6. Step 6: Final answer
    x = 71,418.38

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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.