Finding the Fourth Proportional to 91,813.74, 126,655.74 and 61,239.48
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Solution
The fourth proportional to 91,813.74, 126,655.74 and 61,239.48 is: 84,478.99
Step by Step Solution
- Step 1: Write the proportion equation
91,813.74 : 126,655.74 = 61,239.48 : x - Step 2: Convert to fraction form
91,813.74/126,655.74 = 61,239.48/x - Step 3: Cross multiply
91,813.74x = 126,655.74 × 61,239.48 - Step 4: Simplify right side
91,813.74x = 7,756,331,656.62 - Step 5: Solve for x
x = 7,756,331,656.62/91,813.74 - Step 6: Final answer
x = 84,478.99
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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.