Home / 70,945.28-97,905.12-39,115.32

Finding the Fourth Proportional to 70,945.28, 97,905.12 and 39,115.32

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Solution

The fourth proportional to 70,945.28, 97,905.12 and 39,115.32 is: 53,979.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,945.28 : 97,905.12 = 39,115.32 : x
  2. Step 2: Convert to fraction form
    70,945.28/97,905.12 = 39,115.32/x
  3. Step 3: Cross multiply
    70,945.28x = 97,905.12 × 39,115.32
  4. Step 4: Simplify right side
    70,945.28x = 3,829,590,098.44
  5. Step 5: Solve for x
    x = 3,829,590,098.44/70,945.28
  6. Step 6: Final answer
    x = 53,979.49

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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.