Finding the Fourth Proportional to 98,401.74, 135,829.50 and 58,115.70
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Solution
The fourth proportional to 98,401.74, 135,829.50 and 58,115.70 is: 80,220.40
Step by Step Solution
- Step 1: Write the proportion equation
98,401.74 : 135,829.50 = 58,115.70 : x - Step 2: Convert to fraction form
98,401.74/135,829.50 = 58,115.70/x - Step 3: Cross multiply
98,401.74x = 135,829.50 × 58,115.70 - Step 4: Simplify right side
98,401.74x = 7,893,826,473.15 - Step 5: Solve for x
x = 7,893,826,473.15/98,401.74 - Step 6: Final answer
x = 80,220.40
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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.