Finding the Fourth Proportional to 92,835.68, 128,146.50 and 55,109.96
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Solution
The fourth proportional to 92,835.68, 128,146.50 and 55,109.96 is: 76,071.49
Step by Step Solution
- Step 1: Write the proportion equation
92,835.68 : 128,146.50 = 55,109.96 : x - Step 2: Convert to fraction form
92,835.68/128,146.50 = 55,109.96/x - Step 3: Cross multiply
92,835.68x = 128,146.50 × 55,109.96 - Step 4: Simplify right side
92,835.68x = 7,062,148,489.14 - Step 5: Solve for x
x = 7,062,148,489.14/92,835.68 - Step 6: Final answer
x = 76,071.49
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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.