Finding the Fourth Proportional to 83,799.40, 125,740.06 and 39,430.56
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Solution
The fourth proportional to 83,799.40, 125,740.06 and 39,430.56 is: 59,165.11
Step by Step Solution
- Step 1: Write the proportion equation
83,799.40 : 125,740.06 = 39,430.56 : x - Step 2: Convert to fraction form
83,799.40/125,740.06 = 39,430.56/x - Step 3: Cross multiply
83,799.40x = 125,740.06 × 39,430.56 - Step 4: Simplify right side
83,799.40x = 4,958,000,980.23 - Step 5: Solve for x
x = 4,958,000,980.23/83,799.40 - Step 6: Final answer
x = 59,165.11
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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.