Finding the Fourth Proportional to 87,743.79, 121,078.35 and 53,736.75
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Solution
The fourth proportional to 87,743.79, 121,078.35 and 53,736.75 is: 74,151.77
Step by Step Solution
- Step 1: Write the proportion equation
87,743.79 : 121,078.35 = 53,736.75 : x - Step 2: Convert to fraction form
87,743.79/121,078.35 = 53,736.75/x - Step 3: Cross multiply
87,743.79x = 121,078.35 × 53,736.75 - Step 4: Simplify right side
87,743.79x = 6,506,357,024.36 - Step 5: Solve for x
x = 6,506,357,024.36/87,743.79 - Step 6: Final answer
x = 74,151.77
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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.