Finding the Fourth Proportional to 68,925.79, 103,315.17 and 39,279.79
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Solution
The fourth proportional to 68,925.79, 103,315.17 and 39,279.79 is: 58,877.79
Step by Step Solution
- Step 1: Write the proportion equation
68,925.79 : 103,315.17 = 39,279.79 : x - Step 2: Convert to fraction form
68,925.79/103,315.17 = 39,279.79/x - Step 3: Cross multiply
68,925.79x = 103,315.17 × 39,279.79 - Step 4: Simplify right side
68,925.79x = 4,058,197,766.24 - Step 5: Solve for x
x = 4,058,197,766.24/68,925.79 - Step 6: Final answer
x = 58,877.79
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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.