Home / 72,664.08-108,995.04-20,072.40

Finding the Fourth Proportional to 72,664.08, 108,995.04 and 20,072.40

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Solution

The fourth proportional to 72,664.08, 108,995.04 and 20,072.40 is: 30,108.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,664.08 : 108,995.04 = 20,072.40 : x
  2. Step 2: Convert to fraction form
    72,664.08/108,995.04 = 20,072.40/x
  3. Step 3: Cross multiply
    72,664.08x = 108,995.04 × 20,072.40
  4. Step 4: Simplify right side
    72,664.08x = 2,187,792,040.90
  5. Step 5: Solve for x
    x = 2,187,792,040.90/72,664.08
  6. Step 6: Final answer
    x = 30,108.30

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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.