Finding the Fourth Proportional to 85,517,526.20, 128,276,289.30 and 74,755,845.95
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Solution
The fourth proportional to 85,517,526.20, 128,276,289.30 and 74,755,845.95 is: 112,133,768.93
Step by Step Solution
- Step 1: Write the proportion equation
85,517,526.20 : 128,276,289.30 = 74,755,845.95 : x - Step 2: Convert to fraction form
85,517,526.20/128,276,289.30 = 74,755,845.95/x - Step 3: Cross multiply
85,517,526.20x = 128,276,289.30 × 74,755,845.95 - Step 4: Simplify right side
85,517,526.20x = 9,589,402,521,948,434 - Step 5: Solve for x
x = 9,589,402,521,948,434/85,517,526.20 - Step 6: Final answer
x = 112,133,768.93
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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.