Finding the Fourth Proportional to 55,531,041.92, 76,631,877.12 and 30,750,737.60
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Solution
The fourth proportional to 55,531,041.92, 76,631,877.12 and 30,750,737.60 is: 42,435,485.88
Step by Step Solution
- Step 1: Write the proportion equation
55,531,041.92 : 76,631,877.12 = 30,750,737.60 : x - Step 2: Convert to fraction form
55,531,041.92/76,631,877.12 = 30,750,737.60/x - Step 3: Cross multiply
55,531,041.92x = 76,631,877.12 × 30,750,737.60 - Step 4: Simplify right side
55,531,041.92x = 2,356,486,745,112,564 - Step 5: Solve for x
x = 2,356,486,745,112,564/55,531,041.92 - Step 6: Final answer
x = 42,435,485.88
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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.