Finding the Fourth Proportional to 74,702.05, 103,085.83 and 40,709.81
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Solution
The fourth proportional to 74,702.05, 103,085.83 and 40,709.81 is: 56,177.90
Step by Step Solution
- Step 1: Write the proportion equation
74,702.05 : 103,085.83 = 40,709.81 : x - Step 2: Convert to fraction form
74,702.05/103,085.83 = 40,709.81/x - Step 3: Cross multiply
74,702.05x = 103,085.83 × 40,709.81 - Step 4: Simplify right side
74,702.05x = 4,196,604,349.44 - Step 5: Solve for x
x = 4,196,604,349.44/74,702.05 - Step 6: Final answer
x = 56,177.90
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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.