Home / 91,991.21-138,001.39-29,647.13

Finding the Fourth Proportional to 91,991.21, 138,001.39 and 29,647.13

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Solution

The fourth proportional to 91,991.21, 138,001.39 and 29,647.13 is: 44,475.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,991.21 : 138,001.39 = 29,647.13 : x
  2. Step 2: Convert to fraction form
    91,991.21/138,001.39 = 29,647.13/x
  3. Step 3: Cross multiply
    91,991.21x = 138,001.39 × 29,647.13
  4. Step 4: Simplify right side
    91,991.21x = 4,091,344,385.39
  5. Step 5: Solve for x
    x = 4,091,344,385.39/91,991.21
  6. Step 6: Final answer
    x = 44,475.39

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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.