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Finding the Fourth Proportional to 85,509.84, 128,195.61 and 35,627.48

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Solution

The fourth proportional to 85,509.84, 128,195.61 and 35,627.48 is: 53,412.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,509.84 : 128,195.61 = 35,627.48 : x
  2. Step 2: Convert to fraction form
    85,509.84/128,195.61 = 35,627.48/x
  3. Step 3: Cross multiply
    85,509.84x = 128,195.61 × 35,627.48
  4. Step 4: Simplify right side
    85,509.84x = 4,567,286,531.36
  5. Step 5: Solve for x
    x = 4,567,286,531.36/85,509.84
  6. Step 6: Final answer
    x = 53,412.41

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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.