Finding the Fourth Proportional to 71,852,415.40, 107,778,623.10 and 20,736,101.80
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Solution
The fourth proportional to 71,852,415.40, 107,778,623.10 and 20,736,101.80 is: 31,104,152.70
Step by Step Solution
- Step 1: Write the proportion equation
71,852,415.40 : 107,778,623.10 = 20,736,101.80 : x - Step 2: Convert to fraction form
71,852,415.40/107,778,623.10 = 20,736,101.80/x - Step 3: Cross multiply
71,852,415.40x = 107,778,623.10 × 20,736,101.80 - Step 4: Simplify right side
71,852,415.40x = 2,234,908,500,465,431.50 - Step 5: Solve for x
x = 2,234,908,500,465,431.50/71,852,415.40 - Step 6: Final answer
x = 31,104,152.70
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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.