Finding the Fourth Proportional to 83,455.48, 115,134.78 and 47,638.36
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Solution
The fourth proportional to 83,455.48, 115,134.78 and 47,638.36 is: 65,721.65
Step by Step Solution
- Step 1: Write the proportion equation
83,455.48 : 115,134.78 = 47,638.36 : x - Step 2: Convert to fraction form
83,455.48/115,134.78 = 47,638.36/x - Step 3: Cross multiply
83,455.48x = 115,134.78 × 47,638.36 - Step 4: Simplify right side
83,455.48x = 5,484,832,098.16 - Step 5: Solve for x
x = 5,484,832,098.16/83,455.48 - Step 6: Final answer
x = 65,721.65
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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.