Finding the Fourth Proportional to 87,913.39, 121,320.33 and 47,628.18
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Solution
The fourth proportional to 87,913.39, 121,320.33 and 47,628.18 is: 65,726.80
Step by Step Solution
- Step 1: Write the proportion equation
87,913.39 : 121,320.33 = 47,628.18 : x - Step 2: Convert to fraction form
87,913.39/121,320.33 = 47,628.18/x - Step 3: Cross multiply
87,913.39x = 121,320.33 × 47,628.18 - Step 4: Simplify right side
87,913.39x = 5,778,265,908.30 - Step 5: Solve for x
x = 5,778,265,908.30/87,913.39 - Step 6: Final answer
x = 65,726.80
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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.