Finding the Fourth Proportional to 102,386.40, 141,304.68 and 57,068.52
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Solution
The fourth proportional to 102,386.40, 141,304.68 and 57,068.52 is: 78,760.94
Step by Step Solution
- Step 1: Write the proportion equation
102,386.40 : 141,304.68 = 57,068.52 : x - Step 2: Convert to fraction form
102,386.40/141,304.68 = 57,068.52/x - Step 3: Cross multiply
102,386.40x = 141,304.68 × 57,068.52 - Step 4: Simplify right side
102,386.40x = 8,064,048,956.67 - Step 5: Solve for x
x = 8,064,048,956.67/102,386.40 - Step 6: Final answer
x = 78,760.94
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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.