Finding the Fourth Proportional to 74,476.79, 102,679.21 and 61,682.84
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Solution
The fourth proportional to 74,476.79, 102,679.21 and 61,682.84 is: 85,040.52
Step by Step Solution
- Step 1: Write the proportion equation
74,476.79 : 102,679.21 = 61,682.84 : x - Step 2: Convert to fraction form
74,476.79/102,679.21 = 61,682.84/x - Step 3: Cross multiply
74,476.79x = 102,679.21 × 61,682.84 - Step 4: Simplify right side
74,476.79x = 6,333,545,281.76 - Step 5: Solve for x
x = 6,333,545,281.76/74,476.79 - Step 6: Final answer
x = 85,040.52
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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.