Home / 93,419.36-128,918.72-66,608.58

Finding the Fourth Proportional to 93,419.36, 128,918.72 and 66,608.58

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Solution

The fourth proportional to 93,419.36, 128,918.72 and 66,608.58 is: 91,919.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,419.36 : 128,918.72 = 66,608.58 : x
  2. Step 2: Convert to fraction form
    93,419.36/128,918.72 = 66,608.58/x
  3. Step 3: Cross multiply
    93,419.36x = 128,918.72 × 66,608.58
  4. Step 4: Simplify right side
    93,419.36x = 8,587,092,874.62
  5. Step 5: Solve for x
    x = 8,587,092,874.62/93,419.36
  6. Step 6: Final answer
    x = 91,919.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.