Finding the Fourth Proportional to 77,237.40, 115,856.10 and 27,317.10
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Solution
The fourth proportional to 77,237.40, 115,856.10 and 27,317.10 is: 40,975.65
Step by Step Solution
- Step 1: Write the proportion equation
77,237.40 : 115,856.10 = 27,317.10 : x - Step 2: Convert to fraction form
77,237.40/115,856.10 = 27,317.10/x - Step 3: Cross multiply
77,237.40x = 115,856.10 × 27,317.10 - Step 4: Simplify right side
77,237.40x = 3,164,852,669.31 - Step 5: Solve for x
x = 3,164,852,669.31/77,237.40 - Step 6: Final answer
x = 40,975.65
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Double scale
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Similar ratio
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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.