Finding the Fourth Proportional to 98,513.64, 135,955.74 and 56,072.18
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Solution
The fourth proportional to 98,513.64, 135,955.74 and 56,072.18 is: 77,383.55
Step by Step Solution
- Step 1: Write the proportion equation
98,513.64 : 135,955.74 = 56,072.18 : x - Step 2: Convert to fraction form
98,513.64/135,955.74 = 56,072.18/x - Step 3: Cross multiply
98,513.64x = 135,955.74 × 56,072.18 - Step 4: Simplify right side
98,513.64x = 7,623,334,725.31 - Step 5: Solve for x
x = 7,623,334,725.31/98,513.64 - Step 6: Final answer
x = 77,383.55
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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.