Finding the Fourth Proportional to 98,842.28, 136,412.12 and 56,407.19
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Solution
The fourth proportional to 98,842.28, 136,412.12 and 56,407.19 is: 77,847.50
Step by Step Solution
- Step 1: Write the proportion equation
98,842.28 : 136,412.12 = 56,407.19 : x - Step 2: Convert to fraction form
98,842.28/136,412.12 = 56,407.19/x - Step 3: Cross multiply
98,842.28x = 136,412.12 × 56,407.19 - Step 4: Simplify right side
98,842.28x = 7,694,624,089.11 - Step 5: Solve for x
x = 7,694,624,089.11/98,842.28 - Step 6: Final answer
x = 77,847.50
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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.