Finding the Fourth Proportional to 79,638.53, 109,864.35 and 47,752.07
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Solution
The fourth proportional to 79,638.53, 109,864.35 and 47,752.07 is: 65,875.78
Step by Step Solution
- Step 1: Write the proportion equation
79,638.53 : 109,864.35 = 47,752.07 : x - Step 2: Convert to fraction form
79,638.53/109,864.35 = 47,752.07/x - Step 3: Cross multiply
79,638.53x = 109,864.35 × 47,752.07 - Step 4: Simplify right side
79,638.53x = 5,246,249,582.38 - Step 5: Solve for x
x = 5,246,249,582.38/79,638.53 - Step 6: Final answer
x = 65,875.78
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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.