Home / 72,144.09-99,558.63-40,313.02

Finding the Fourth Proportional to 72,144.09, 99,558.63 and 40,313.02

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Solution

The fourth proportional to 72,144.09, 99,558.63 and 40,313.02 is: 55,631.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,144.09 : 99,558.63 = 40,313.02 : x
  2. Step 2: Convert to fraction form
    72,144.09/99,558.63 = 40,313.02/x
  3. Step 3: Cross multiply
    72,144.09x = 99,558.63 × 40,313.02
  4. Step 4: Simplify right side
    72,144.09x = 4,013,509,042.36
  5. Step 5: Solve for x
    x = 4,013,509,042.36/72,144.09
  6. Step 6: Final answer
    x = 55,631.85

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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.