Finding the Fourth Proportional to 81,266.13, 121,947.63 and 36,283.99
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Solution
The fourth proportional to 81,266.13, 121,947.63 and 36,283.99 is: 54,447.61
Step by Step Solution
- Step 1: Write the proportion equation
81,266.13 : 121,947.63 = 36,283.99 : x - Step 2: Convert to fraction form
81,266.13/121,947.63 = 36,283.99/x - Step 3: Cross multiply
81,266.13x = 121,947.63 × 36,283.99 - Step 4: Simplify right side
81,266.13x = 4,424,746,587.44 - Step 5: Solve for x
x = 4,424,746,587.44/81,266.13 - Step 6: Final answer
x = 54,447.61
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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.