Finding the Fourth Proportional to 91,710.18, 126,621.81 and 57,307.14
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Solution
The fourth proportional to 91,710.18, 126,621.81 and 57,307.14 is: 79,122.45
Step by Step Solution
- Step 1: Write the proportion equation
91,710.18 : 126,621.81 = 57,307.14 : x - Step 2: Convert to fraction form
91,710.18/126,621.81 = 57,307.14/x - Step 3: Cross multiply
91,710.18x = 126,621.81 × 57,307.14 - Step 4: Simplify right side
91,710.18x = 7,256,333,792.72 - Step 5: Solve for x
x = 7,256,333,792.72/91,710.18 - Step 6: Final answer
x = 79,122.45
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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.