Finding the Fourth Proportional to 98,381.29, 135,778.61 and 55,931.62
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Solution
The fourth proportional to 98,381.29, 135,778.61 and 55,931.62 is: 77,192.70
Step by Step Solution
- Step 1: Write the proportion equation
98,381.29 : 135,778.61 = 55,931.62 : x - Step 2: Convert to fraction form
98,381.29/135,778.61 = 55,931.62/x - Step 3: Cross multiply
98,381.29x = 135,778.61 × 55,931.62 - Step 4: Simplify right side
98,381.29x = 7,594,317,618.65 - Step 5: Solve for x
x = 7,594,317,618.65/98,381.29 - Step 6: Final answer
x = 77,192.70
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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.