Finding the Fourth Proportional to 65,921,129.20, 98,811,709.80 and 31,820,258.80
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Solution
The fourth proportional to 65,921,129.20, 98,811,709.80 and 31,820,258.80 is: 47,696,606.79
Step by Step Solution
- Step 1: Write the proportion equation
65,921,129.20 : 98,811,709.80 = 31,820,258.80 : x - Step 2: Convert to fraction form
65,921,129.20/98,811,709.80 = 31,820,258.80/x - Step 3: Cross multiply
65,921,129.20x = 98,811,709.80 × 31,820,258.80 - Step 4: Simplify right side
65,921,129.20x = 3,144,214,178,306,496 - Step 5: Solve for x
x = 3,144,214,178,306,496/65,921,129.20 - Step 6: Final answer
x = 47,696,606.79
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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.