Home / 45,087.20-67,616.40-18,785.60

Finding the Fourth Proportional to 45,087.20, 67,616.40 and 18,785.60

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Solution

The fourth proportional to 45,087.20, 67,616.40 and 18,785.60 is: 28,172.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,087.20 : 67,616.40 = 18,785.60 : x
  2. Step 2: Convert to fraction form
    45,087.20/67,616.40 = 18,785.60/x
  3. Step 3: Cross multiply
    45,087.20x = 67,616.40 × 18,785.60
  4. Step 4: Simplify right side
    45,087.20x = 1,270,214,643.84
  5. Step 5: Solve for x
    x = 1,270,214,643.84/45,087.20
  6. Step 6: Final answer
    x = 28,172.40

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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.