Finding the Fourth Proportional to 112,438.95, 168,638.99 and 42,318.87
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Solution
The fourth proportional to 112,438.95, 168,638.99 and 42,318.87 is: 63,470.99
Step by Step Solution
- Step 1: Write the proportion equation
112,438.95 : 168,638.99 = 42,318.87 : x - Step 2: Convert to fraction form
112,438.95/168,638.99 = 42,318.87/x - Step 3: Cross multiply
112,438.95x = 168,638.99 × 42,318.87 - Step 4: Simplify right side
112,438.95x = 7,136,611,283.15 - Step 5: Solve for x
x = 7,136,611,283.15/112,438.95 - Step 6: Final answer
x = 63,470.99
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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.