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Finding the Fourth Proportional to 89,989.96, 134,987.10 and 27,661

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Solution

The fourth proportional to 89,989.96, 134,987.10 and 27,661 is: 41,492.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,989.96 : 134,987.10 = 27,661 : x
  2. Step 2: Convert to fraction form
    89,989.96/134,987.10 = 27,661/x
  3. Step 3: Cross multiply
    89,989.96x = 134,987.10 × 27,661
  4. Step 4: Simplify right side
    89,989.96x = 3,733,878,173.10
  5. Step 5: Solve for x
    x = 3,733,878,173.10/89,989.96
  6. Step 6: Final answer
    x = 41,492.16

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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.