Finding the Fourth Proportional to 94,128.14, 129,899.49 and 55,878.32
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Solution
The fourth proportional to 94,128.14, 129,899.49 and 55,878.32 is: 77,113.66
Step by Step Solution
- Step 1: Write the proportion equation
94,128.14 : 129,899.49 = 55,878.32 : x - Step 2: Convert to fraction form
94,128.14/129,899.49 = 55,878.32/x - Step 3: Cross multiply
94,128.14x = 129,899.49 × 55,878.32 - Step 4: Simplify right side
94,128.14x = 7,258,565,270.06 - Step 5: Solve for x
x = 7,258,565,270.06/94,128.14 - Step 6: Final answer
x = 77,113.66
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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.