Home / 39,180.40-54,075.06-22,185.52

Finding the Fourth Proportional to 39,180.40, 54,075.06 and 22,185.52

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Solution

The fourth proportional to 39,180.40, 54,075.06 and 22,185.52 is: 30,619.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,180.40 : 54,075.06 = 22,185.52 : x
  2. Step 2: Convert to fraction form
    39,180.40/54,075.06 = 22,185.52/x
  3. Step 3: Cross multiply
    39,180.40x = 54,075.06 × 22,185.52
  4. Step 4: Simplify right side
    39,180.40x = 1,199,683,325.13
  5. Step 5: Solve for x
    x = 1,199,683,325.13/39,180.40
  6. Step 6: Final answer
    x = 30,619.48

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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.