Finding the Fourth Proportional to 83,438.80, 115,148.48 and 45,713.08
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Solution
The fourth proportional to 83,438.80, 115,148.48 and 45,713.08 is: 63,085.66
Step by Step Solution
- Step 1: Write the proportion equation
83,438.80 : 115,148.48 = 45,713.08 : x - Step 2: Convert to fraction form
83,438.80/115,148.48 = 45,713.08/x - Step 3: Cross multiply
83,438.80x = 115,148.48 × 45,713.08 - Step 4: Simplify right side
83,438.80x = 5,263,791,678.12 - Step 5: Solve for x
x = 5,263,791,678.12/83,438.80 - Step 6: Final answer
x = 63,085.66
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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.