Home / 65,255.09-90,095.36-50,120.64

Finding the Fourth Proportional to 65,255.09, 90,095.36 and 50,120.64

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Solution

The fourth proportional to 65,255.09, 90,095.36 and 50,120.64 is: 69,199.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,255.09 : 90,095.36 = 50,120.64 : x
  2. Step 2: Convert to fraction form
    65,255.09/90,095.36 = 50,120.64/x
  3. Step 3: Cross multiply
    65,255.09x = 90,095.36 × 50,120.64
  4. Step 4: Simplify right side
    65,255.09x = 4,515,636,853.63
  5. Step 5: Solve for x
    x = 4,515,636,853.63/65,255.09
  6. Step 6: Final answer
    x = 69,199.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.