Finding the Fourth Proportional to 83,990,806.20, 125,986,209.30 and 69,641,899.20
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Solution
The fourth proportional to 83,990,806.20, 125,986,209.30 and 69,641,899.20 is: 104,462,848.80
Step by Step Solution
- Step 1: Write the proportion equation
83,990,806.20 : 125,986,209.30 = 69,641,899.20 : x - Step 2: Convert to fraction form
83,990,806.20/125,986,209.30 = 69,641,899.20/x - Step 3: Cross multiply
83,990,806.20x = 125,986,209.30 × 69,641,899.20 - Step 4: Simplify right side
83,990,806.20x = 8,773,918,888,660,703 - Step 5: Solve for x
x = 8,773,918,888,660,703/83,990,806.20 - Step 6: Final answer
x = 104,462,848.80
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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.