Finding the Fourth Proportional to 98,545.68, 135,993.16 and 56,104.21
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Solution
The fourth proportional to 98,545.68, 135,993.16 and 56,104.21 is: 77,423.88
Step by Step Solution
- Step 1: Write the proportion equation
98,545.68 : 135,993.16 = 56,104.21 : x - Step 2: Convert to fraction form
98,545.68/135,993.16 = 56,104.21/x - Step 3: Cross multiply
98,545.68x = 135,993.16 × 56,104.21 - Step 4: Simplify right side
98,545.68x = 7,629,788,127.24 - Step 5: Solve for x
x = 7,629,788,127.24/98,545.68 - Step 6: Final answer
x = 77,423.88
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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.