Finding the Fourth Proportional to 74,675.28, 102,910.16 and 53,417.68
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Solution
The fourth proportional to 74,675.28, 102,910.16 and 53,417.68 is: 73,615.02
Step by Step Solution
- Step 1: Write the proportion equation
74,675.28 : 102,910.16 = 53,417.68 : x - Step 2: Convert to fraction form
74,675.28/102,910.16 = 53,417.68/x - Step 3: Cross multiply
74,675.28x = 102,910.16 × 53,417.68 - Step 4: Simplify right side
74,675.28x = 5,497,221,995.63 - Step 5: Solve for x
x = 5,497,221,995.63/74,675.28 - Step 6: Final answer
x = 73,615.02
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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.