Finding the Fourth Proportional to 75,552,608.40, 113,356,906.20 and 72,753,248.40
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Solution
The fourth proportional to 75,552,608.40, 113,356,906.20 and 72,753,248.40 is: 109,156,828.99
Step by Step Solution
- Step 1: Write the proportion equation
75,552,608.40 : 113,356,906.20 = 72,753,248.40 : x - Step 2: Convert to fraction form
75,552,608.40/113,356,906.20 = 72,753,248.40/x - Step 3: Cross multiply
75,552,608.40x = 113,356,906.20 × 72,753,248.40 - Step 4: Simplify right side
75,552,608.40x = 8,247,083,154,624,101 - Step 5: Solve for x
x = 8,247,083,154,624,101/75,552,608.40 - Step 6: Final answer
x = 109,156,828.99
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1.5x scale
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.