Finding the Fourth Proportional to 79,701.09, 109,987.50 and 43,890.99
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Solution
The fourth proportional to 79,701.09, 109,987.50 and 43,890.99 is: 60,569.56
Step by Step Solution
- Step 1: Write the proportion equation
79,701.09 : 109,987.50 = 43,890.99 : x - Step 2: Convert to fraction form
79,701.09/109,987.50 = 43,890.99/x - Step 3: Cross multiply
79,701.09x = 109,987.50 × 43,890.99 - Step 4: Simplify right side
79,701.09x = 4,827,460,262.63 - Step 5: Solve for x
x = 4,827,460,262.63/79,701.09 - Step 6: Final answer
x = 60,569.56
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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.