Finding the Fourth Proportional to 83,385.36, 115,089.66 and 53,163.72
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Solution
The fourth proportional to 83,385.36, 115,089.66 and 53,163.72 is: 73,377.32
Step by Step Solution
- Step 1: Write the proportion equation
83,385.36 : 115,089.66 = 53,163.72 : x - Step 2: Convert to fraction form
83,385.36/115,089.66 = 53,163.72/x - Step 3: Cross multiply
83,385.36x = 115,089.66 × 53,163.72 - Step 4: Simplify right side
83,385.36x = 6,118,594,459.14 - Step 5: Solve for x
x = 6,118,594,459.14/83,385.36 - Step 6: Final answer
x = 73,377.32
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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.