Finding the Fourth Proportional to 83,988.87, 115,863.81 and 53,749.95
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Solution
The fourth proportional to 83,988.87, 115,863.81 and 53,749.95 is: 74,148.80
Step by Step Solution
- Step 1: Write the proportion equation
83,988.87 : 115,863.81 = 53,749.95 : x - Step 2: Convert to fraction form
83,988.87/115,863.81 = 53,749.95/x - Step 3: Cross multiply
83,988.87x = 115,863.81 × 53,749.95 - Step 4: Simplify right side
83,988.87x = 6,227,673,994.31 - Step 5: Solve for x
x = 6,227,673,994.31/83,988.87 - Step 6: Final answer
x = 74,148.80
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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.