Finding the Fourth Proportional to 98,870.42, 136,331.84 and 63,003.62
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Solution
The fourth proportional to 98,870.42, 136,331.84 and 63,003.62 is: 86,875.32
Step by Step Solution
- Step 1: Write the proportion equation
98,870.42 : 136,331.84 = 63,003.62 : x - Step 2: Convert to fraction form
98,870.42/136,331.84 = 63,003.62/x - Step 3: Cross multiply
98,870.42x = 136,331.84 × 63,003.62 - Step 4: Simplify right side
98,870.42x = 8,589,399,441.26 - Step 5: Solve for x
x = 8,589,399,441.26/98,870.42 - Step 6: Final answer
x = 86,875.32
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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.