Finding the Fourth Proportional to 99,295.22, 136,993.86 and 56,270.18
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Solution
The fourth proportional to 99,295.22, 136,993.86 and 56,270.18 is: 77,633.84
Step by Step Solution
- Step 1: Write the proportion equation
99,295.22 : 136,993.86 = 56,270.18 : x - Step 2: Convert to fraction form
99,295.22/136,993.86 = 56,270.18/x - Step 3: Cross multiply
99,295.22x = 136,993.86 × 56,270.18 - Step 4: Simplify right side
99,295.22x = 7,708,668,476.13 - Step 5: Solve for x
x = 7,708,668,476.13/99,295.22 - Step 6: Final answer
x = 77,633.84
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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.