Finding the Fourth Proportional to 88,913.84, 122,820.91 and 71,135.96
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Solution
The fourth proportional to 88,913.84, 122,820.91 and 71,135.96 is: 98,263.48
Step by Step Solution
- Step 1: Write the proportion equation
88,913.84 : 122,820.91 = 71,135.96 : x - Step 2: Convert to fraction form
88,913.84/122,820.91 = 71,135.96/x - Step 3: Cross multiply
88,913.84x = 122,820.91 × 71,135.96 - Step 4: Simplify right side
88,913.84x = 8,736,982,548.98 - Step 5: Solve for x
x = 8,736,982,548.98/88,913.84 - Step 6: Final answer
x = 98,263.48
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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.