Finding the Fourth Proportional to 83,619.60, 115,386.36 and 47,325.12
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Solution
The fourth proportional to 83,619.60, 115,386.36 and 47,325.12 is: 65,303.75
Step by Step Solution
- Step 1: Write the proportion equation
83,619.60 : 115,386.36 = 47,325.12 : x - Step 2: Convert to fraction form
83,619.60/115,386.36 = 47,325.12/x - Step 3: Cross multiply
83,619.60x = 115,386.36 × 47,325.12 - Step 4: Simplify right side
83,619.60x = 5,460,673,333.36 - Step 5: Solve for x
x = 5,460,673,333.36/83,619.60 - Step 6: Final answer
x = 65,303.75
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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.