Finding the Fourth Proportional to 81,886,305.60, 122,829,458.40 and 38,839,584.60
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Solution
The fourth proportional to 81,886,305.60, 122,829,458.40 and 38,839,584.60 is: 58,259,376.90
Step by Step Solution
- Step 1: Write the proportion equation
81,886,305.60 : 122,829,458.40 = 38,839,584.60 : x - Step 2: Convert to fraction form
81,886,305.60/122,829,458.40 = 38,839,584.60/x - Step 3: Cross multiply
81,886,305.60x = 122,829,458.40 × 38,839,584.60 - Step 4: Simplify right side
81,886,305.60x = 4,770,645,140,898,981 - Step 5: Solve for x
x = 4,770,645,140,898,981/81,886,305.60 - Step 6: Final answer
x = 58,259,376.90
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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.