Finding the Fourth Proportional to 81,929,282.05, 122,808,087.50 and 38,173,961.75
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Solution
The fourth proportional to 81,929,282.05, 122,808,087.50 and 38,173,961.75 is: 57,220,948.58
Step by Step Solution
- Step 1: Write the proportion equation
81,929,282.05 : 122,808,087.50 = 38,173,961.75 : x - Step 2: Convert to fraction form
81,929,282.05/122,808,087.50 = 38,173,961.75/x - Step 3: Cross multiply
81,929,282.05x = 122,808,087.50 × 38,173,961.75 - Step 4: Simplify right side
81,929,282.05x = 4,688,071,234,815,653 - Step 5: Solve for x
x = 4,688,071,234,815,653/81,929,282.05 - Step 6: Final answer
x = 57,220,948.58
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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.