Finding the Fourth Proportional to 90,741.09, 136,139.32 and 46,398.99
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Solution
The fourth proportional to 90,741.09, 136,139.32 and 46,398.99 is: 69,612.64
Step by Step Solution
- Step 1: Write the proportion equation
90,741.09 : 136,139.32 = 46,398.99 : x - Step 2: Convert to fraction form
90,741.09/136,139.32 = 46,398.99/x - Step 3: Cross multiply
90,741.09x = 136,139.32 × 46,398.99 - Step 4: Simplify right side
90,741.09x = 6,316,726,266.59 - Step 5: Solve for x
x = 6,316,726,266.59/90,741.09 - Step 6: Final answer
x = 69,612.64
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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.