Finding the Fourth Proportional to 78,717.12, 118,017.36 and 47,545.08
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Solution
The fourth proportional to 78,717.12, 118,017.36 and 47,545.08 is: 71,282.39
Step by Step Solution
- Step 1: Write the proportion equation
78,717.12 : 118,017.36 = 47,545.08 : x - Step 2: Convert to fraction form
78,717.12/118,017.36 = 47,545.08/x - Step 3: Cross multiply
78,717.12x = 118,017.36 × 47,545.08 - Step 4: Simplify right side
78,717.12x = 5,611,144,822.59 - Step 5: Solve for x
x = 5,611,144,822.59/78,717.12 - Step 6: Final answer
x = 71,282.39
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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.