Finding the Fourth Proportional to 83,990,713.70, 125,986,070.55 and 69,641,806.70
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Solution
The fourth proportional to 83,990,713.70, 125,986,070.55 and 69,641,806.70 is: 104,462,710.05
Step by Step Solution
- Step 1: Write the proportion equation
83,990,713.70 : 125,986,070.55 = 69,641,806.70 : x - Step 2: Convert to fraction form
83,990,713.70/125,986,070.55 = 69,641,806.70/x - Step 3: Cross multiply
83,990,713.70x = 125,986,070.55 × 69,641,806.70 - Step 4: Simplify right side
83,990,713.70x = 8,773,897,572,135,663 - Step 5: Solve for x
x = 8,773,897,572,135,663/83,990,713.70 - Step 6: Final answer
x = 104,462,710.05
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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.