Finding the Fourth Proportional to 81,391.84, 112,317.68 and 45,580.08
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Solution
The fourth proportional to 81,391.84, 112,317.68 and 45,580.08 is: 62,898.80
Step by Step Solution
- Step 1: Write the proportion equation
81,391.84 : 112,317.68 = 45,580.08 : x - Step 2: Convert to fraction form
81,391.84/112,317.68 = 45,580.08/x - Step 3: Cross multiply
81,391.84x = 112,317.68 × 45,580.08 - Step 4: Simplify right side
81,391.84x = 5,119,448,839.81 - Step 5: Solve for x
x = 5,119,448,839.81/81,391.84 - Step 6: Final answer
x = 62,898.80
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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.