Home / 62,355.36-86,137.20-55,638.72

Finding the Fourth Proportional to 62,355.36, 86,137.20 and 55,638.72

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Solution

The fourth proportional to 62,355.36, 86,137.20 and 55,638.72 is: 76,858.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,355.36 : 86,137.20 = 55,638.72 : x
  2. Step 2: Convert to fraction form
    62,355.36/86,137.20 = 55,638.72/x
  3. Step 3: Cross multiply
    62,355.36x = 86,137.20 × 55,638.72
  4. Step 4: Simplify right side
    62,355.36x = 4,792,563,552.38
  5. Step 5: Solve for x
    x = 4,792,563,552.38/62,355.36
  6. Step 6: Final answer
    x = 76,858.89

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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.