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Finding the Fourth Proportional to 85,752.45, 128,628.74 and 35,805.33

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Solution

The fourth proportional to 85,752.45, 128,628.74 and 35,805.33 is: 53,708.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,752.45 : 128,628.74 = 35,805.33 : x
  2. Step 2: Convert to fraction form
    85,752.45/128,628.74 = 35,805.33/x
  3. Step 3: Cross multiply
    85,752.45x = 128,628.74 × 35,805.33
  4. Step 4: Simplify right side
    85,752.45x = 4,605,594,304.16
  5. Step 5: Solve for x
    x = 4,605,594,304.16/85,752.45
  6. Step 6: Final answer
    x = 53,708.02

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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.