Finding the Fourth Proportional to 70,949,636.40, 106,424,454.60 and 69,514,745.70
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Solution
The fourth proportional to 70,949,636.40, 106,424,454.60 and 69,514,745.70 is: 104,272,118.55
Step by Step Solution
- Step 1: Write the proportion equation
70,949,636.40 : 106,424,454.60 = 69,514,745.70 : x - Step 2: Convert to fraction form
70,949,636.40/106,424,454.60 = 69,514,745.70/x - Step 3: Cross multiply
70,949,636.40x = 106,424,454.60 × 69,514,745.70 - Step 4: Simplify right side
70,949,636.40x = 7,398,068,897,780,195 - Step 5: Solve for x
x = 7,398,068,897,780,195/70,949,636.40 - Step 6: Final answer
x = 104,272,118.55
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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.