Finding the Fourth Proportional to 115,452,890.80, 159,264,584.88 and 71,385,803.12
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Solution
The fourth proportional to 115,452,890.80, 159,264,584.88 and 71,385,803.12 is: 98,475,059.58
Step by Step Solution
- Step 1: Write the proportion equation
115,452,890.80 : 159,264,584.88 = 71,385,803.12 : x - Step 2: Convert to fraction form
115,452,890.80/159,264,584.88 = 71,385,803.12/x - Step 3: Cross multiply
115,452,890.80x = 159,264,584.88 × 71,385,803.12 - Step 4: Simplify right side
115,452,890.80x = 11,369,230,300,232,210 - Step 5: Solve for x
x = 11,369,230,300,232,210/115,452,890.80 - Step 6: Final answer
x = 98,475,059.58
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.