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Finding the Fourth Proportional to 90,059.47, 135,091.93 and 30,894.28

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Solution

The fourth proportional to 90,059.47, 135,091.93 and 30,894.28 is: 46,342.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,059.47 : 135,091.93 = 30,894.28 : x
  2. Step 2: Convert to fraction form
    90,059.47/135,091.93 = 30,894.28/x
  3. Step 3: Cross multiply
    90,059.47x = 135,091.93 × 30,894.28
  4. Step 4: Simplify right side
    90,059.47x = 4,173,568,118.64
  5. Step 5: Solve for x
    x = 4,173,568,118.64/90,059.47
  6. Step 6: Final answer
    x = 46,342.36

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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.