Finding the Fourth Proportional to 86,792.48, 130,187.76 and 21,128.48
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Solution
The fourth proportional to 86,792.48, 130,187.76 and 21,128.48 is: 31,692.49
Step by Step Solution
- Step 1: Write the proportion equation
86,792.48 : 130,187.76 = 21,128.48 : x - Step 2: Convert to fraction form
86,792.48/130,187.76 = 21,128.48/x - Step 3: Cross multiply
86,792.48x = 130,187.76 × 21,128.48 - Step 4: Simplify right side
86,792.48x = 2,750,669,483.40 - Step 5: Solve for x
x = 2,750,669,483.40/86,792.48 - Step 6: Final answer
x = 31,692.49
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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.