Finding the Fourth Proportional to 74,867.68, 103,327.41 and 72,406.09
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Solution
The fourth proportional to 74,867.68, 103,327.41 and 72,406.09 is: 99,930.09
Step by Step Solution
- Step 1: Write the proportion equation
74,867.68 : 103,327.41 = 72,406.09 : x - Step 2: Convert to fraction form
74,867.68/103,327.41 = 72,406.09/x - Step 3: Cross multiply
74,867.68x = 103,327.41 × 72,406.09 - Step 4: Simplify right side
74,867.68x = 7,481,533,747.93 - Step 5: Solve for x
x = 7,481,533,747.93/74,867.68 - Step 6: Final answer
x = 99,930.09
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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.