Finding the Fourth Proportional to 81,215.02, 112,077.53 and 45,406.99
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Solution
The fourth proportional to 81,215.02, 112,077.53 and 45,406.99 is: 62,662.09
Step by Step Solution
- Step 1: Write the proportion equation
81,215.02 : 112,077.53 = 45,406.99 : x - Step 2: Convert to fraction form
81,215.02/112,077.53 = 45,406.99/x - Step 3: Cross multiply
81,215.02x = 112,077.53 × 45,406.99 - Step 4: Simplify right side
81,215.02x = 5,089,103,283.93 - Step 5: Solve for x
x = 5,089,103,283.93/81,215.02 - Step 6: Final answer
x = 62,662.09
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1.5x scale
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.