Finding the Fourth Proportional to 77,277.60, 115,916.40 and 32,905.80
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Solution
The fourth proportional to 77,277.60, 115,916.40 and 32,905.80 is: 49,358.70
Step by Step Solution
- Step 1: Write the proportion equation
77,277.60 : 115,916.40 = 32,905.80 : x - Step 2: Convert to fraction form
77,277.60/115,916.40 = 32,905.80/x - Step 3: Cross multiply
77,277.60x = 115,916.40 × 32,905.80 - Step 4: Simplify right side
77,277.60x = 3,814,321,875.12 - Step 5: Solve for x
x = 3,814,321,875.12/77,277.60 - Step 6: Final answer
x = 49,358.70
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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.