Finding the Fourth Proportional to 85,790.90, 128,703.36 and 26,624.05
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Solution
The fourth proportional to 85,790.90, 128,703.36 and 26,624.05 is: 39,941.35
Step by Step Solution
- Step 1: Write the proportion equation
85,790.90 : 128,703.36 = 26,624.05 : x - Step 2: Convert to fraction form
85,790.90/128,703.36 = 26,624.05/x - Step 3: Cross multiply
85,790.90x = 128,703.36 × 26,624.05 - Step 4: Simplify right side
85,790.90x = 3,426,604,691.81 - Step 5: Solve for x
x = 3,426,604,691.81/85,790.90 - Step 6: Final answer
x = 39,941.35
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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.