Finding the Fourth Proportional to 87,932.79, 121,347.36 and 47,646.54
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Solution
The fourth proportional to 87,932.79, 121,347.36 and 47,646.54 is: 65,752.28
Step by Step Solution
- Step 1: Write the proportion equation
87,932.79 : 121,347.36 = 47,646.54 : x - Step 2: Convert to fraction form
87,932.79/121,347.36 = 47,646.54/x - Step 3: Cross multiply
87,932.79x = 121,347.36 × 47,646.54 - Step 4: Simplify right side
87,932.79x = 5,781,781,842.13 - Step 5: Solve for x
x = 5,781,781,842.13/87,932.79 - Step 6: Final answer
x = 65,752.28
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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.