Home / 85,845.08-128,786.08-28,924.64

Finding the Fourth Proportional to 85,845.08, 128,786.08 and 28,924.64

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Solution

The fourth proportional to 85,845.08, 128,786.08 and 28,924.64 is: 43,393.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,845.08 : 128,786.08 = 28,924.64 : x
  2. Step 2: Convert to fraction form
    85,845.08/128,786.08 = 28,924.64/x
  3. Step 3: Cross multiply
    85,845.08x = 128,786.08 × 28,924.64
  4. Step 4: Simplify right side
    85,845.08x = 3,725,091,001.01
  5. Step 5: Solve for x
    x = 3,725,091,001.01/85,845.08
  6. Step 6: Final answer
    x = 43,393.18

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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.