Finding the Fourth Proportional to 78,856.16, 118,283.63 and 19,691.43
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Solution
The fourth proportional to 78,856.16, 118,283.63 and 19,691.43 is: 29,536.99
Step by Step Solution
- Step 1: Write the proportion equation
78,856.16 : 118,283.63 = 19,691.43 : x - Step 2: Convert to fraction form
78,856.16/118,283.63 = 19,691.43/x - Step 3: Cross multiply
78,856.16x = 118,283.63 × 19,691.43 - Step 4: Simplify right side
78,856.16x = 2,329,173,278.27 - Step 5: Solve for x
x = 2,329,173,278.27/78,856.16 - Step 6: Final answer
x = 29,536.99
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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.