Finding the Fourth Proportional to 65,889,318.40, 98,787,897.60 and 38,949,107.20
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Solution
The fourth proportional to 65,889,318.40, 98,787,897.60 and 38,949,107.20 is: 58,396,421.56
Step by Step Solution
- Step 1: Write the proportion equation
65,889,318.40 : 98,787,897.60 = 38,949,107.20 : x - Step 2: Convert to fraction form
65,889,318.40/98,787,897.60 = 38,949,107.20/x - Step 3: Cross multiply
65,889,318.40x = 98,787,897.60 × 38,949,107.20 - Step 4: Simplify right side
65,889,318.40x = 3,847,700,413,685,023 - Step 5: Solve for x
x = 3,847,700,413,685,023/65,889,318.40 - Step 6: Final answer
x = 58,396,421.56
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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.