Finding the Fourth Proportional to 70,938.09, 106,421.72 and 29,385.09
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Solution
The fourth proportional to 70,938.09, 106,421.72 and 29,385.09 is: 44,083.67
Step by Step Solution
- Step 1: Write the proportion equation
70,938.09 : 106,421.72 = 29,385.09 : x - Step 2: Convert to fraction form
70,938.09/106,421.72 = 29,385.09/x - Step 3: Cross multiply
70,938.09x = 106,421.72 × 29,385.09 - Step 4: Simplify right side
70,938.09x = 3,127,211,673.23 - Step 5: Solve for x
x = 3,127,211,673.23/70,938.09 - Step 6: Final answer
x = 44,083.67
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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.