Home / 53,640.78-80,399.25-39,389.10

Finding the Fourth Proportional to 53,640.78, 80,399.25 and 39,389.10

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Solution

The fourth proportional to 53,640.78, 80,399.25 and 39,389.10 is: 59,038.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,640.78 : 80,399.25 = 39,389.10 : x
  2. Step 2: Convert to fraction form
    53,640.78/80,399.25 = 39,389.10/x
  3. Step 3: Cross multiply
    53,640.78x = 80,399.25 × 39,389.10
  4. Step 4: Simplify right side
    53,640.78x = 3,166,854,098.18
  5. Step 5: Solve for x
    x = 3,166,854,098.18/53,640.78
  6. Step 6: Final answer
    x = 59,038.18

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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.