Finding the Fourth Proportional to 97,813.64, 134,982.90 and 55,385.84
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Solution
The fourth proportional to 97,813.64, 134,982.90 and 55,385.84 is: 76,432.50
Step by Step Solution
- Step 1: Write the proportion equation
97,813.64 : 134,982.90 = 55,385.84 : x - Step 2: Convert to fraction form
97,813.64/134,982.90 = 55,385.84/x - Step 3: Cross multiply
97,813.64x = 134,982.90 × 55,385.84 - Step 4: Simplify right side
97,813.64x = 7,476,141,302.14 - Step 5: Solve for x
x = 7,476,141,302.14/97,813.64 - Step 6: Final answer
x = 76,432.50
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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.