Finding the Fourth Proportional to 83,990,712.70, 125,986,069.05 and 69,641,805.70
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Solution
The fourth proportional to 83,990,712.70, 125,986,069.05 and 69,641,805.70 is: 104,462,708.55
Step by Step Solution
- Step 1: Write the proportion equation
83,990,712.70 : 125,986,069.05 = 69,641,805.70 : x - Step 2: Convert to fraction form
83,990,712.70/125,986,069.05 = 69,641,805.70/x - Step 3: Cross multiply
83,990,712.70x = 125,986,069.05 × 69,641,805.70 - Step 4: Simplify right side
83,990,712.70x = 8,773,897,341,686,884 - Step 5: Solve for x
x = 8,773,897,341,686,884/83,990,712.70 - Step 6: Final answer
x = 104,462,708.55
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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.