Home / 72,089.61-99,480.60-40,257.96

Finding the Fourth Proportional to 72,089.61, 99,480.60 and 40,257.96

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Solution

The fourth proportional to 72,089.61, 99,480.60 and 40,257.96 is: 55,554.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,089.61 : 99,480.60 = 40,257.96 : x
  2. Step 2: Convert to fraction form
    72,089.61/99,480.60 = 40,257.96/x
  3. Step 3: Cross multiply
    72,089.61x = 99,480.60 × 40,257.96
  4. Step 4: Simplify right side
    72,089.61x = 4,004,886,015.58
  5. Step 5: Solve for x
    x = 4,004,886,015.58/72,089.61
  6. Step 6: Final answer
    x = 55,554.27

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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.