Home / 72,741.49-100,326.26-49,784.89

Finding the Fourth Proportional to 72,741.49, 100,326.26 and 49,784.89

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Solution

The fourth proportional to 72,741.49, 100,326.26 and 49,784.89 is: 68,664.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,741.49 : 100,326.26 = 49,784.89 : x
  2. Step 2: Convert to fraction form
    72,741.49/100,326.26 = 49,784.89/x
  3. Step 3: Cross multiply
    72,741.49x = 100,326.26 × 49,784.89
  4. Step 4: Simplify right side
    72,741.49x = 4,994,731,818.21
  5. Step 5: Solve for x
    x = 4,994,731,818.21/72,741.49
  6. Step 6: Final answer
    x = 68,664.14

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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.