Finding the Fourth Proportional to 80,885,831.60, 121,328,747.40 and 76,740,591.80
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Solution
The fourth proportional to 80,885,831.60, 121,328,747.40 and 76,740,591.80 is: 115,110,887.70
Step by Step Solution
- Step 1: Write the proportion equation
80,885,831.60 : 121,328,747.40 = 76,740,591.80 : x - Step 2: Convert to fraction form
80,885,831.60/121,328,747.40 = 76,740,591.80/x - Step 3: Cross multiply
80,885,831.60x = 121,328,747.40 × 76,740,591.80 - Step 4: Simplify right side
80,885,831.60x = 9,310,839,877,828,712 - Step 5: Solve for x
x = 9,310,839,877,828,712/80,885,831.60 - Step 6: Final answer
x = 115,110,887.70
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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.