Finding the Fourth Proportional to 98,973.32, 136,584.70 and 56,531.94
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Solution
The fourth proportional to 98,973.32, 136,584.70 and 56,531.94 is: 78,014.94
Step by Step Solution
- Step 1: Write the proportion equation
98,973.32 : 136,584.70 = 56,531.94 : x - Step 2: Convert to fraction form
98,973.32/136,584.70 = 56,531.94/x - Step 3: Cross multiply
98,973.32x = 136,584.70 × 56,531.94 - Step 4: Simplify right side
98,973.32x = 7,721,398,065.32 - Step 5: Solve for x
x = 7,721,398,065.32/98,973.32 - Step 6: Final answer
x = 78,014.94
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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.