Finding the Fourth Proportional to 81,662,428.80, 122,493,643.20 and 70,576,963.20
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Solution
The fourth proportional to 81,662,428.80, 122,493,643.20 and 70,576,963.20 is: 105,865,444.80
Step by Step Solution
- Step 1: Write the proportion equation
81,662,428.80 : 122,493,643.20 = 70,576,963.20 : x - Step 2: Convert to fraction form
81,662,428.80/122,493,643.20 = 70,576,963.20/x - Step 3: Cross multiply
81,662,428.80x = 122,493,643.20 × 70,576,963.20 - Step 4: Simplify right side
81,662,428.80x = 8,645,229,348,360,331 - Step 5: Solve for x
x = 8,645,229,348,360,331/81,662,428.80 - Step 6: Final answer
x = 105,865,444.80
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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.