Finding the Fourth Proportional to 92,888.46, 128,239.20 and 61,149.62
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Solution
The fourth proportional to 92,888.46, 128,239.20 and 61,149.62 is: 84,421.45
Step by Step Solution
- Step 1: Write the proportion equation
92,888.46 : 128,239.20 = 61,149.62 : x - Step 2: Convert to fraction form
92,888.46/128,239.20 = 61,149.62/x - Step 3: Cross multiply
92,888.46x = 128,239.20 × 61,149.62 - Step 4: Simplify right side
92,888.46x = 7,841,777,707.91 - Step 5: Solve for x
x = 7,841,777,707.91/92,888.46 - Step 6: Final answer
x = 84,421.45
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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.