Finding the Fourth Proportional to 85,778.14, 128,642.61 and 29,603.68
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Solution
The fourth proportional to 85,778.14, 128,642.61 and 29,603.68 is: 44,397.03
Step by Step Solution
- Step 1: Write the proportion equation
85,778.14 : 128,642.61 = 29,603.68 : x - Step 2: Convert to fraction form
85,778.14/128,642.61 = 29,603.68/x - Step 3: Cross multiply
85,778.14x = 128,642.61 × 29,603.68 - Step 4: Simplify right side
85,778.14x = 3,808,294,660.80 - Step 5: Solve for x
x = 3,808,294,660.80/85,778.14 - Step 6: Final answer
x = 44,397.03
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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.