Finding the Fourth Proportional to 76,741.40, 115,117.78 and 26,815.70
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Solution
The fourth proportional to 76,741.40, 115,117.78 and 26,815.70 is: 40,225.53
Step by Step Solution
- Step 1: Write the proportion equation
76,741.40 : 115,117.78 = 26,815.70 : x - Step 2: Convert to fraction form
76,741.40/115,117.78 = 26,815.70/x - Step 3: Cross multiply
76,741.40x = 115,117.78 × 26,815.70 - Step 4: Simplify right side
76,741.40x = 3,086,963,853.15 - Step 5: Solve for x
x = 3,086,963,853.15/76,741.40 - Step 6: Final answer
x = 40,225.53
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.