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Finding the Fourth Proportional to 90,690.84, 135,983.16 and 27,492.12

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Solution

The fourth proportional to 90,690.84, 135,983.16 and 27,492.12 is: 41,222.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,690.84 : 135,983.16 = 27,492.12 : x
  2. Step 2: Convert to fraction form
    90,690.84/135,983.16 = 27,492.12/x
  3. Step 3: Cross multiply
    90,690.84x = 135,983.16 × 27,492.12
  4. Step 4: Simplify right side
    90,690.84x = 3,738,465,352.70
  5. Step 5: Solve for x
    x = 3,738,465,352.70/90,690.84
  6. Step 6: Final answer
    x = 41,222.08

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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.