Finding the Fourth Proportional to 72,177.80, 108,266.70 and 19,587.20
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Solution
The fourth proportional to 72,177.80, 108,266.70 and 19,587.20 is: 29,380.80
Step by Step Solution
- Step 1: Write the proportion equation
72,177.80 : 108,266.70 = 19,587.20 : x - Step 2: Convert to fraction form
72,177.80/108,266.70 = 19,587.20/x - Step 3: Cross multiply
72,177.80x = 108,266.70 × 19,587.20 - Step 4: Simplify right side
72,177.80x = 2,120,641,506.24 - Step 5: Solve for x
x = 2,120,641,506.24/72,177.80 - Step 6: Final answer
x = 29,380.80
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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.