Finding the Fourth Proportional to 81,613.16, 122,420.28 and 22,455.08
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Solution
The fourth proportional to 81,613.16, 122,420.28 and 22,455.08 is: 33,682.77
Step by Step Solution
- Step 1: Write the proportion equation
81,613.16 : 122,420.28 = 22,455.08 : x - Step 2: Convert to fraction form
81,613.16/122,420.28 = 22,455.08/x - Step 3: Cross multiply
81,613.16x = 122,420.28 × 22,455.08 - Step 4: Simplify right side
81,613.16x = 2,748,957,181.02 - Step 5: Solve for x
x = 2,748,957,181.02/81,613.16 - Step 6: Final answer
x = 33,682.77
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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.