Finding the Fourth Proportional to 81,392.16, 121,869.50 and 51,648.96
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Solution
The fourth proportional to 81,392.16, 121,869.50 and 51,648.96 is: 77,334.63
Step by Step Solution
- Step 1: Write the proportion equation
81,392.16 : 121,869.50 = 51,648.96 : x - Step 2: Convert to fraction form
81,392.16/121,869.50 = 51,648.96/x - Step 3: Cross multiply
81,392.16x = 121,869.50 × 51,648.96 - Step 4: Simplify right side
81,392.16x = 6,294,432,930.72 - Step 5: Solve for x
x = 6,294,432,930.72/81,392.16 - Step 6: Final answer
x = 77,334.63
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.