Home / 90,660.71-136,035.62-40,776.05

Finding the Fourth Proportional to 90,660.71, 136,035.62 and 40,776.05

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Solution

The fourth proportional to 90,660.71, 136,035.62 and 40,776.05 is: 61,184.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,660.71 : 136,035.62 = 40,776.05 : x
  2. Step 2: Convert to fraction form
    90,660.71/136,035.62 = 40,776.05/x
  3. Step 3: Cross multiply
    90,660.71x = 136,035.62 × 40,776.05
  4. Step 4: Simplify right side
    90,660.71x = 5,546,994,358.84
  5. Step 5: Solve for x
    x = 5,546,994,358.84/90,660.71
  6. Step 6: Final answer
    x = 61,184.11

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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.