Finding the Fourth Proportional to 98,962.74, 136,586.87 and 56,521.28
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Solution
The fourth proportional to 98,962.74, 136,586.87 and 56,521.28 is: 78,009.80
Step by Step Solution
- Step 1: Write the proportion equation
98,962.74 : 136,586.87 = 56,521.28 : x - Step 2: Convert to fraction form
98,962.74/136,586.87 = 56,521.28/x - Step 3: Cross multiply
98,962.74x = 136,586.87 × 56,521.28 - Step 4: Simplify right side
98,962.74x = 7,720,063,758.05 - Step 5: Solve for x
x = 7,720,063,758.05/98,962.74 - Step 6: Final answer
x = 78,009.80
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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.