Home / 62,810.20-86,656.64-38,928.16

Finding the Fourth Proportional to 62,810.20, 86,656.64 and 38,928.16

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Solution

The fourth proportional to 62,810.20, 86,656.64 and 38,928.16 is: 53,707.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,810.20 : 86,656.64 = 38,928.16 : x
  2. Step 2: Convert to fraction form
    62,810.20/86,656.64 = 38,928.16/x
  3. Step 3: Cross multiply
    62,810.20x = 86,656.64 × 38,928.16
  4. Step 4: Simplify right side
    62,810.20x = 3,373,383,546.98
  5. Step 5: Solve for x
    x = 3,373,383,546.98/62,810.20
  6. Step 6: Final answer
    x = 53,707.58

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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.