Finding the Fourth Proportional to 81,130.18, 121,636.95 and 36,734.08
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Solution
The fourth proportional to 81,130.18, 121,636.95 and 36,734.08 is: 55,074.71
Step by Step Solution
- Step 1: Write the proportion equation
81,130.18 : 121,636.95 = 36,734.08 : x - Step 2: Convert to fraction form
81,130.18/121,636.95 = 36,734.08/x - Step 3: Cross multiply
81,130.18x = 121,636.95 × 36,734.08 - Step 4: Simplify right side
81,130.18x = 4,468,221,452.26 - Step 5: Solve for x
x = 4,468,221,452.26/81,130.18 - Step 6: Final answer
x = 55,074.71
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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.