Finding the Fourth Proportional to 79,939,678.08, 110,270,707.38 and 48,127,700.82
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Solution
The fourth proportional to 79,939,678.08, 110,270,707.38 and 48,127,700.82 is: 66,388,503.70
Step by Step Solution
- Step 1: Write the proportion equation
79,939,678.08 : 110,270,707.38 = 48,127,700.82 : x - Step 2: Convert to fraction form
79,939,678.08/110,270,707.38 = 48,127,700.82/x - Step 3: Cross multiply
79,939,678.08x = 110,270,707.38 × 48,127,700.82 - Step 4: Simplify right side
79,939,678.08x = 5,307,075,613,994,406 - Step 5: Solve for x
x = 5,307,075,613,994,406/79,939,678.08 - Step 6: Final answer
x = 66,388,503.70
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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.