Finding the Fourth Proportional to 75,916,939.40, 113,875,409.10 and 72,389,745.80
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Solution
The fourth proportional to 75,916,939.40, 113,875,409.10 and 72,389,745.80 is: 108,584,618.70
Step by Step Solution
- Step 1: Write the proportion equation
75,916,939.40 : 113,875,409.10 = 72,389,745.80 : x - Step 2: Convert to fraction form
75,916,939.40/113,875,409.10 = 72,389,745.80/x - Step 3: Cross multiply
75,916,939.40x = 113,875,409.10 × 72,389,745.80 - Step 4: Simplify right side
75,916,939.40x = 8,243,411,917,620,006 - Step 5: Solve for x
x = 8,243,411,917,620,006/75,916,939.40 - Step 6: Final answer
x = 108,584,618.70
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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.