Finding the Fourth Proportional to 31,519,384.20, 47,242,334.70 and 14,481,779.40
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Solution
The fourth proportional to 31,519,384.20, 47,242,334.70 and 14,481,779.40 is: 21,705,787.94
Step by Step Solution
- Step 1: Write the proportion equation
31,519,384.20 : 47,242,334.70 = 14,481,779.40 : x - Step 2: Convert to fraction form
31,519,384.20/47,242,334.70 = 14,481,779.40/x - Step 3: Cross multiply
31,519,384.20x = 47,242,334.70 × 14,481,779.40 - Step 4: Simplify right side
31,519,384.20x = 684,153,069,466,365.25 - Step 5: Solve for x
x = 684,153,069,466,365.25/31,519,384.20 - Step 6: Final answer
x = 21,705,787.94
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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.