Finding the Fourth Proportional to 74,987.09, 103,484.94 and 40,997.84
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Solution
The fourth proportional to 74,987.09, 103,484.94 and 40,997.84 is: 56,578.52
Step by Step Solution
- Step 1: Write the proportion equation
74,987.09 : 103,484.94 = 40,997.84 : x - Step 2: Convert to fraction form
74,987.09/103,484.94 = 40,997.84/x - Step 3: Cross multiply
74,987.09x = 103,484.94 × 40,997.84 - Step 4: Simplify right side
74,987.09x = 4,242,658,495.10 - Step 5: Solve for x
x = 4,242,658,495.10/74,987.09 - Step 6: Final answer
x = 56,578.52
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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.