Finding the Fourth Proportional to 87,973.16, 121,399.71 and 47,686.05
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Solution
The fourth proportional to 87,973.16, 121,399.71 and 47,686.05 is: 65,804.99
Step by Step Solution
- Step 1: Write the proportion equation
87,973.16 : 121,399.71 = 47,686.05 : x - Step 2: Convert to fraction form
87,973.16/121,399.71 = 47,686.05/x - Step 3: Cross multiply
87,973.16x = 121,399.71 × 47,686.05 - Step 4: Simplify right side
87,973.16x = 5,789,072,641.05 - Step 5: Solve for x
x = 5,789,072,641.05/87,973.16 - Step 6: Final answer
x = 65,804.99
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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.