Finding the Fourth Proportional to 86,938,895.68, 119,973,138.72 and 49,767,943.36
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Solution
The fourth proportional to 86,938,895.68, 119,973,138.72 and 49,767,943.36 is: 68,678,309.36
Step by Step Solution
- Step 1: Write the proportion equation
86,938,895.68 : 119,973,138.72 = 49,767,943.36 : x - Step 2: Convert to fraction form
86,938,895.68/119,973,138.72 = 49,767,943.36/x - Step 3: Cross multiply
86,938,895.68x = 119,973,138.72 × 49,767,943.36 - Step 4: Simplify right side
86,938,895.68x = 5,970,816,372,538,383 - Step 5: Solve for x
x = 5,970,816,372,538,383/86,938,895.68 - Step 6: Final answer
x = 68,678,309.36
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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.