Home / 85,973.56-128,945.74-39,215.48

Finding the Fourth Proportional to 85,973.56, 128,945.74 and 39,215.48

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Solution

The fourth proportional to 85,973.56, 128,945.74 and 39,215.48 is: 58,816.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,973.56 : 128,945.74 = 39,215.48 : x
  2. Step 2: Convert to fraction form
    85,973.56/128,945.74 = 39,215.48/x
  3. Step 3: Cross multiply
    85,973.56x = 128,945.74 × 39,215.48
  4. Step 4: Simplify right side
    85,973.56x = 5,056,669,088.06
  5. Step 5: Solve for x
    x = 5,056,669,088.06/85,973.56
  6. Step 6: Final answer
    x = 58,816.56

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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.