Finding the Fourth Proportional to 102,389.52, 141,305.70 and 57,082.08
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Solution
The fourth proportional to 102,389.52, 141,305.70 and 57,082.08 is: 78,777.82
Step by Step Solution
- Step 1: Write the proportion equation
102,389.52 : 141,305.70 = 57,082.08 : x - Step 2: Convert to fraction form
102,389.52/141,305.70 = 57,082.08/x - Step 3: Cross multiply
102,389.52x = 141,305.70 × 57,082.08 - Step 4: Simplify right side
102,389.52x = 8,066,023,271.86 - Step 5: Solve for x
x = 8,066,023,271.86/102,389.52 - Step 6: Final answer
x = 78,777.82
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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.