Finding the Fourth Proportional to 70,749.61, 106,124.42 and 18,159.10
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Solution
The fourth proportional to 70,749.61, 106,124.42 and 18,159.10 is: 27,238.65
Step by Step Solution
- Step 1: Write the proportion equation
70,749.61 : 106,124.42 = 18,159.10 : x - Step 2: Convert to fraction form
70,749.61/106,124.42 = 18,159.10/x - Step 3: Cross multiply
70,749.61x = 106,124.42 × 18,159.10 - Step 4: Simplify right side
70,749.61x = 1,927,123,735.31 - Step 5: Solve for x
x = 1,927,123,735.31/70,749.61 - Step 6: Final answer
x = 27,238.65
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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.