Finding the Fourth Proportional to 97,918.25, 135,127.32 and 55,479.65
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Solution
The fourth proportional to 97,918.25, 135,127.32 and 55,479.65 is: 76,561.99
Step by Step Solution
- Step 1: Write the proportion equation
97,918.25 : 135,127.32 = 55,479.65 : x - Step 2: Convert to fraction form
97,918.25/135,127.32 = 55,479.65/x - Step 3: Cross multiply
97,918.25x = 135,127.32 × 55,479.65 - Step 4: Simplify right side
97,918.25x = 7,496,816,419.04 - Step 5: Solve for x
x = 7,496,816,419.04/97,918.25 - Step 6: Final answer
x = 76,561.99
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1.5x scale
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.