Finding the Fourth Proportional to 83,772.72, 115,603.18 and 47,966.08
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Solution
The fourth proportional to 83,772.72, 115,603.18 and 47,966.08 is: 66,191.37
Step by Step Solution
- Step 1: Write the proportion equation
83,772.72 : 115,603.18 = 47,966.08 : x - Step 2: Convert to fraction form
83,772.72/115,603.18 = 47,966.08/x - Step 3: Cross multiply
83,772.72x = 115,603.18 × 47,966.08 - Step 4: Simplify right side
83,772.72x = 5,545,031,380.13 - Step 5: Solve for x
x = 5,545,031,380.13/83,772.72 - Step 6: Final answer
x = 66,191.37
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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.