Home / 45,172.36-67,746.30-18,871.60

Finding the Fourth Proportional to 45,172.36, 67,746.30 and 18,871.60

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Solution

The fourth proportional to 45,172.36, 67,746.30 and 18,871.60 is: 28,302.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,172.36 : 67,746.30 = 18,871.60 : x
  2. Step 2: Convert to fraction form
    45,172.36/67,746.30 = 18,871.60/x
  3. Step 3: Cross multiply
    45,172.36x = 67,746.30 × 18,871.60
  4. Step 4: Simplify right side
    45,172.36x = 1,278,481,075.08
  5. Step 5: Solve for x
    x = 1,278,481,075.08/45,172.36
  6. Step 6: Final answer
    x = 28,302.29

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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.