Finding the Fourth Proportional to 75,132.86, 103,683.52 and 40,677.96
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Solution
The fourth proportional to 75,132.86, 103,683.52 and 40,677.96 is: 56,135.68
Step by Step Solution
- Step 1: Write the proportion equation
75,132.86 : 103,683.52 = 40,677.96 : x - Step 2: Convert to fraction form
75,132.86/103,683.52 = 40,677.96/x - Step 3: Cross multiply
75,132.86x = 103,683.52 × 40,677.96 - Step 4: Simplify right side
75,132.86x = 4,217,634,079.22 - Step 5: Solve for x
x = 4,217,634,079.22/75,132.86 - Step 6: Final answer
x = 56,135.68
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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.