Finding the Fourth Proportional to 103,636.08, 155,430.90 and 40,457.70
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Solution
The fourth proportional to 103,636.08, 155,430.90 and 40,457.70 is: 60,677.49
Step by Step Solution
- Step 1: Write the proportion equation
103,636.08 : 155,430.90 = 40,457.70 : x - Step 2: Convert to fraction form
103,636.08/155,430.90 = 40,457.70/x - Step 3: Cross multiply
103,636.08x = 155,430.90 × 40,457.70 - Step 4: Simplify right side
103,636.08x = 6,288,376,722.93 - Step 5: Solve for x
x = 6,288,376,722.93/103,636.08 - Step 6: Final answer
x = 60,677.49
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.