Finding the Fourth Proportional to 112,530.25, 155,292.15 and 61,543.99
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Solution
The fourth proportional to 112,530.25, 155,292.15 and 61,543.99 is: 84,930.93
Step by Step Solution
- Step 1: Write the proportion equation
112,530.25 : 155,292.15 = 61,543.99 : x - Step 2: Convert to fraction form
112,530.25/155,292.15 = 61,543.99/x - Step 3: Cross multiply
112,530.25x = 155,292.15 × 61,543.99 - Step 4: Simplify right side
112,530.25x = 9,557,298,526.68 - Step 5: Solve for x
x = 9,557,298,526.68/112,530.25 - Step 6: Final answer
x = 84,930.93
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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.