Finding the Fourth Proportional to 78,296.36, 117,444.12 and 19,132.28
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Solution
The fourth proportional to 78,296.36, 117,444.12 and 19,132.28 is: 28,698.32
Step by Step Solution
- Step 1: Write the proportion equation
78,296.36 : 117,444.12 = 19,132.28 : x - Step 2: Convert to fraction form
78,296.36/117,444.12 = 19,132.28/x - Step 3: Cross multiply
78,296.36x = 117,444.12 × 19,132.28 - Step 4: Simplify right side
78,296.36x = 2,246,973,788.19 - Step 5: Solve for x
x = 2,246,973,788.19/78,296.36 - Step 6: Final answer
x = 28,698.32
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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.