Home / 70,905.36-97,849.58-38,640.23

Finding the Fourth Proportional to 70,905.36, 97,849.58 and 38,640.23

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Solution

The fourth proportional to 70,905.36, 97,849.58 and 38,640.23 is: 53,323.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,905.36 : 97,849.58 = 38,640.23 : x
  2. Step 2: Convert to fraction form
    70,905.36/97,849.58 = 38,640.23/x
  3. Step 3: Cross multiply
    70,905.36x = 97,849.58 × 38,640.23
  4. Step 4: Simplify right side
    70,905.36x = 3,780,929,594.15
  5. Step 5: Solve for x
    x = 3,780,929,594.15/70,905.36
  6. Step 6: Final answer
    x = 53,323.61

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Double scale
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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.