Finding the Fourth Proportional to 90,287,072.68, 124,606,796.90 and 53,617,643.68
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Solution
The fourth proportional to 90,287,072.68, 124,606,796.90 and 53,617,643.68 is: 73,998,664.90
Step by Step Solution
- Step 1: Write the proportion equation
90,287,072.68 : 124,606,796.90 = 53,617,643.68 : x - Step 2: Convert to fraction form
90,287,072.68/124,606,796.90 = 53,617,643.68/x - Step 3: Cross multiply
90,287,072.68x = 124,606,796.90 × 53,617,643.68 - Step 4: Simplify right side
90,287,072.68x = 6,681,122,836,290,329 - Step 5: Solve for x
x = 6,681,122,836,290,329/90,287,072.68 - Step 6: Final answer
x = 73,998,664.90
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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.