Finding the Fourth Proportional to 31,658,446.80, 47,487,670.20 and 18,893,365.20
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Solution
The fourth proportional to 31,658,446.80, 47,487,670.20 and 18,893,365.20 is: 28,340,047.80
Step by Step Solution
- Step 1: Write the proportion equation
31,658,446.80 : 47,487,670.20 = 18,893,365.20 : x - Step 2: Convert to fraction form
31,658,446.80/47,487,670.20 = 18,893,365.20/x - Step 3: Cross multiply
31,658,446.80x = 47,487,670.20 × 18,893,365.20 - Step 4: Simplify right side
31,658,446.80x = 897,201,895,585,757 - Step 5: Solve for x
x = 897,201,895,585,757/31,658,446.80 - Step 6: Final answer
x = 28,340,047.80
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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.