Finding the Fourth Proportional to 66,366,155.80, 99,549,233.70 and 55,028,747.80
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Solution
The fourth proportional to 66,366,155.80, 99,549,233.70 and 55,028,747.80 is: 82,543,121.70
Step by Step Solution
- Step 1: Write the proportion equation
66,366,155.80 : 99,549,233.70 = 55,028,747.80 : x - Step 2: Convert to fraction form
66,366,155.80/99,549,233.70 = 55,028,747.80/x - Step 3: Cross multiply
66,366,155.80x = 99,549,233.70 × 55,028,747.80 - Step 4: Simplify right side
66,366,155.80x = 5,478,069,674,960,561 - Step 5: Solve for x
x = 5,478,069,674,960,561/66,366,155.80 - Step 6: Final answer
x = 82,543,121.70
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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.