Finding the Fourth Proportional to 88,157.70, 121,657.28 and 47,871.14
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Solution
The fourth proportional to 88,157.70, 121,657.28 and 47,871.14 is: 66,061.98
Step by Step Solution
- Step 1: Write the proportion equation
88,157.70 : 121,657.28 = 47,871.14 : x - Step 2: Convert to fraction form
88,157.70/121,657.28 = 47,871.14/x - Step 3: Cross multiply
88,157.70x = 121,657.28 × 47,871.14 - Step 4: Simplify right side
88,157.70x = 5,823,871,835.26 - Step 5: Solve for x
x = 5,823,871,835.26/88,157.70 - Step 6: Final answer
x = 66,061.98
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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.