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Finding the Fourth Proportional to 90,515.64, 135,733.37 and 48,385.52

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Solution

The fourth proportional to 90,515.64, 135,733.37 and 48,385.52 is: 72,556.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,515.64 : 135,733.37 = 48,385.52 : x
  2. Step 2: Convert to fraction form
    90,515.64/135,733.37 = 48,385.52/x
  3. Step 3: Cross multiply
    90,515.64x = 135,733.37 × 48,385.52
  4. Step 4: Simplify right side
    90,515.64x = 6,567,528,768.21
  5. Step 5: Solve for x
    x = 6,567,528,768.21/90,515.64
  6. Step 6: Final answer
    x = 72,556.84

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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.