Finding the Fourth Proportional to 81,909,511.05, 122,864,266.58 and 21,325,237.05
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Solution
The fourth proportional to 81,909,511.05, 122,864,266.58 and 21,325,237.05 is: 31,987,855.58
Step by Step Solution
- Step 1: Write the proportion equation
81,909,511.05 : 122,864,266.58 = 21,325,237.05 : x - Step 2: Convert to fraction form
81,909,511.05/122,864,266.58 = 21,325,237.05/x - Step 3: Cross multiply
81,909,511.05x = 122,864,266.58 × 21,325,237.05 - Step 4: Simplify right side
81,909,511.05x = 2,620,109,609,686,267 - Step 5: Solve for x
x = 2,620,109,609,686,267/81,909,511.05 - Step 6: Final answer
x = 31,987,855.58
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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.