Finding the Fourth Proportional to 98,878.56, 136,460.80 and 55,865.94
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Solution
The fourth proportional to 98,878.56, 136,460.80 and 55,865.94 is: 77,099.73
Step by Step Solution
- Step 1: Write the proportion equation
98,878.56 : 136,460.80 = 55,865.94 : x - Step 2: Convert to fraction form
98,878.56/136,460.80 = 55,865.94/x - Step 3: Cross multiply
98,878.56x = 136,460.80 × 55,865.94 - Step 4: Simplify right side
98,878.56x = 7,623,510,423.26 - Step 5: Solve for x
x = 7,623,510,423.26/98,878.56 - Step 6: Final answer
x = 77,099.73
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1.5x scale
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.