Finding the Fourth Proportional to 77,278,831.70, 115,918,247.55 and 41,447,023.70
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Solution
The fourth proportional to 77,278,831.70, 115,918,247.55 and 41,447,023.70 is: 62,170,535.55
Step by Step Solution
- Step 1: Write the proportion equation
77,278,831.70 : 115,918,247.55 = 41,447,023.70 : x - Step 2: Convert to fraction form
77,278,831.70/115,918,247.55 = 41,447,023.70/x - Step 3: Cross multiply
77,278,831.70x = 115,918,247.55 × 41,447,023.70 - Step 4: Simplify right side
77,278,831.70x = 4,804,466,353,467,317 - Step 5: Solve for x
x = 4,804,466,353,467,317/77,278,831.70 - Step 6: Final answer
x = 62,170,535.55
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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.