Finding the Fourth Proportional to 66,606,882.75, 91,912,831.99 and 38,727,615.05
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Solution
The fourth proportional to 66,606,882.75, 91,912,831.99 and 38,727,615.05 is: 53,441,395.67
Step by Step Solution
- Step 1: Write the proportion equation
66,606,882.75 : 91,912,831.99 = 38,727,615.05 : x - Step 2: Convert to fraction form
66,606,882.75/91,912,831.99 = 38,727,615.05/x - Step 3: Cross multiply
66,606,882.75x = 91,912,831.99 × 38,727,615.05 - Step 4: Simplify right side
66,606,882.75x = 3,559,564,775,464,045 - Step 5: Solve for x
x = 3,559,564,775,464,045/66,606,882.75 - Step 6: Final answer
x = 53,441,395.67
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.