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Finding the Fourth Proportional to 90,015.69, 134,940.07 and 30,837.30

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Solution

The fourth proportional to 90,015.69, 134,940.07 and 30,837.30 is: 46,227.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,015.69 : 134,940.07 = 30,837.30 : x
  2. Step 2: Convert to fraction form
    90,015.69/134,940.07 = 30,837.30/x
  3. Step 3: Cross multiply
    90,015.69x = 134,940.07 × 30,837.30
  4. Step 4: Simplify right side
    90,015.69x = 4,161,187,420.61
  5. Step 5: Solve for x
    x = 4,161,187,420.61/90,015.69
  6. Step 6: Final answer
    x = 46,227.36

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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.