Home / 72,696.15-108,999.57-28,271.13

Finding the Fourth Proportional to 72,696.15, 108,999.57 and 28,271.13

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Solution

The fourth proportional to 72,696.15, 108,999.57 and 28,271.13 is: 42,389.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,696.15 : 108,999.57 = 28,271.13 : x
  2. Step 2: Convert to fraction form
    72,696.15/108,999.57 = 28,271.13/x
  3. Step 3: Cross multiply
    72,696.15x = 108,999.57 × 28,271.13
  4. Step 4: Simplify right side
    72,696.15x = 3,081,540,710.68
  5. Step 5: Solve for x
    x = 3,081,540,710.68/72,696.15
  6. Step 6: Final answer
    x = 42,389.32

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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.