Finding the Fourth Proportional to 40,686.05, 56,146.84 and 22,781.81
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Solution
The fourth proportional to 40,686.05, 56,146.84 and 22,781.81 is: 31,438.95
Step by Step Solution
- Step 1: Write the proportion equation
40,686.05 : 56,146.84 = 22,781.81 : x - Step 2: Convert to fraction form
40,686.05/56,146.84 = 22,781.81/x - Step 3: Cross multiply
40,686.05x = 56,146.84 × 22,781.81 - Step 4: Simplify right side
40,686.05x = 1,279,126,724.39 - Step 5: Solve for x
x = 1,279,126,724.39/40,686.05 - Step 6: Final answer
x = 31,438.95
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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.