Finding the Fourth Proportional to 81,132.80, 121,677.60 and 24,972.80
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Solution
The fourth proportional to 81,132.80, 121,677.60 and 24,972.80 is: 37,452.55
Step by Step Solution
- Step 1: Write the proportion equation
81,132.80 : 121,677.60 = 24,972.80 : x - Step 2: Convert to fraction form
81,132.80/121,677.60 = 24,972.80/x - Step 3: Cross multiply
81,132.80x = 121,677.60 × 24,972.80 - Step 4: Simplify right side
81,132.80x = 3,038,630,369.28 - Step 5: Solve for x
x = 3,038,630,369.28/81,132.80 - Step 6: Final answer
x = 37,452.55
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1.5x scale
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.