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Finding the Fourth Proportional to 85,512.34, 128,199.36 and 35,629.98

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Solution

The fourth proportional to 85,512.34, 128,199.36 and 35,629.98 is: 53,416.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,512.34 : 128,199.36 = 35,629.98 : x
  2. Step 2: Convert to fraction form
    85,512.34/128,199.36 = 35,629.98/x
  3. Step 3: Cross multiply
    85,512.34x = 128,199.36 × 35,629.98
  4. Step 4: Simplify right side
    85,512.34x = 4,567,740,632.81
  5. Step 5: Solve for x
    x = 4,567,740,632.81/85,512.34
  6. Step 6: Final answer
    x = 53,416.16

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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.