Finding the Fourth Proportional to 71,338,425.12, 98,447,605.20 and 38,743,610.40
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Solution
The fourth proportional to 71,338,425.12, 98,447,605.20 and 38,743,610.40 is: 53,466,496.55
Step by Step Solution
- Step 1: Write the proportion equation
71,338,425.12 : 98,447,605.20 = 38,743,610.40 : x - Step 2: Convert to fraction form
71,338,425.12/98,447,605.20 = 38,743,610.40/x - Step 3: Cross multiply
71,338,425.12x = 98,447,605.20 × 38,743,610.40 - Step 4: Simplify right side
71,338,425.12x = 3,814,215,660,681,814 - Step 5: Solve for x
x = 3,814,215,660,681,814/71,338,425.12 - Step 6: Final answer
x = 53,466,496.55
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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.