Finding the Fourth Proportional to 81,869.33, 112,979.66 and 45,569.99
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Solution
The fourth proportional to 81,869.33, 112,979.66 and 45,569.99 is: 62,886.58
Step by Step Solution
- Step 1: Write the proportion equation
81,869.33 : 112,979.66 = 45,569.99 : x - Step 2: Convert to fraction form
81,869.33/112,979.66 = 45,569.99/x - Step 3: Cross multiply
81,869.33x = 112,979.66 × 45,569.99 - Step 4: Simplify right side
81,869.33x = 5,148,482,499.17 - Step 5: Solve for x
x = 5,148,482,499.17/81,869.33 - Step 6: Final answer
x = 62,886.58
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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.