Finding the Fourth Proportional to 31,780,657.80, 47,670,986.70 and 25,403,365.80
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Solution
The fourth proportional to 31,780,657.80, 47,670,986.70 and 25,403,365.80 is: 38,105,048.70
Step by Step Solution
- Step 1: Write the proportion equation
31,780,657.80 : 47,670,986.70 = 25,403,365.80 : x - Step 2: Convert to fraction form
31,780,657.80/47,670,986.70 = 25,403,365.80/x - Step 3: Cross multiply
31,780,657.80x = 47,670,986.70 × 25,403,365.80 - Step 4: Simplify right side
31,780,657.80x = 1,211,003,513,187,035 - Step 5: Solve for x
x = 1,211,003,513,187,035/31,780,657.80 - Step 6: Final answer
x = 38,105,048.70
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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.