Finding the Fourth Proportional to 76,392.91, 114,545.62 and 71,989.75
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Solution
The fourth proportional to 76,392.91, 114,545.62 and 71,989.75 is: 107,943.40
Step by Step Solution
- Step 1: Write the proportion equation
76,392.91 : 114,545.62 = 71,989.75 : x - Step 2: Convert to fraction form
76,392.91/114,545.62 = 71,989.75/x - Step 3: Cross multiply
76,392.91x = 114,545.62 × 71,989.75 - Step 4: Simplify right side
76,392.91x = 8,246,110,547.40 - Step 5: Solve for x
x = 8,246,110,547.40/76,392.91 - Step 6: Final answer
x = 107,943.40
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.