Finding the Fourth Proportional to 66,430,276.80, 99,645,415.20 and 18,561,220.80
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Solution
The fourth proportional to 66,430,276.80, 99,645,415.20 and 18,561,220.80 is: 27,841,831.20
Step by Step Solution
- Step 1: Write the proportion equation
66,430,276.80 : 99,645,415.20 = 18,561,220.80 : x - Step 2: Convert to fraction form
66,430,276.80/99,645,415.20 = 18,561,220.80/x - Step 3: Cross multiply
66,430,276.80x = 99,645,415.20 × 18,561,220.80 - Step 4: Simplify right side
66,430,276.80x = 1,849,540,553,234,876.25 - Step 5: Solve for x
x = 1,849,540,553,234,876.25/66,430,276.80 - Step 6: Final answer
x = 27,841,831.20
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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.