Finding the Fourth Proportional to 76,577.79, 114,851.55 and 72,780.26
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Solution
The fourth proportional to 76,577.79, 114,851.55 and 72,780.26 is: 109,155.99
Step by Step Solution
- Step 1: Write the proportion equation
76,577.79 : 114,851.55 = 72,780.26 : x - Step 2: Convert to fraction form
76,577.79/114,851.55 = 72,780.26/x - Step 3: Cross multiply
76,577.79x = 114,851.55 × 72,780.26 - Step 4: Simplify right side
76,577.79x = 8,358,924,732.24 - Step 5: Solve for x
x = 8,358,924,732.24/76,577.79 - Step 6: Final answer
x = 109,155.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.