Finding the Fourth Proportional to 99,660,057.89, 137,531,259.99 and 55,608,913.40
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Solution
The fourth proportional to 99,660,057.89, 137,531,259.99 and 55,608,913.40 is: 76,740,512.58
Step by Step Solution
- Step 1: Write the proportion equation
99,660,057.89 : 137,531,259.99 = 55,608,913.40 : x - Step 2: Convert to fraction form
99,660,057.89/137,531,259.99 = 55,608,913.40/x - Step 3: Cross multiply
99,660,057.89x = 137,531,259.99 × 55,608,913.40 - Step 4: Simplify right side
99,660,057.89x = 7,647,963,925,889,140 - Step 5: Solve for x
x = 7,647,963,925,889,140/99,660,057.89 - Step 6: Final answer
x = 76,740,512.58
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.