Finding the Fourth Proportional to 75,579.09, 112,701.84 and 74,904.56
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Solution
The fourth proportional to 75,579.09, 112,701.84 and 74,904.56 is: 111,696.00
Step by Step Solution
- Step 1: Write the proportion equation
75,579.09 : 112,701.84 = 74,904.56 : x - Step 2: Convert to fraction form
75,579.09/112,701.84 = 74,904.56/x - Step 3: Cross multiply
75,579.09x = 112,701.84 × 74,904.56 - Step 4: Simplify right side
75,579.09x = 8,441,881,946.63 - Step 5: Solve for x
x = 8,441,881,946.63/75,579.09 - Step 6: Final answer
x = 111,696.00
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.