Finding the Fourth Proportional to 90,988,670.70, 136,483,006.05 and 56,551,293.90
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Solution
The fourth proportional to 90,988,670.70, 136,483,006.05 and 56,551,293.90 is: 84,826,940.85
Step by Step Solution
- Step 1: Write the proportion equation
90,988,670.70 : 136,483,006.05 = 56,551,293.90 : x - Step 2: Convert to fraction form
90,988,670.70/136,483,006.05 = 56,551,293.90/x - Step 3: Cross multiply
90,988,670.70x = 136,483,006.05 × 56,551,293.90 - Step 4: Simplify right side
90,988,670.70x = 7,718,290,587,489,029 - Step 5: Solve for x
x = 7,718,290,587,489,029/90,988,670.70 - Step 6: Final answer
x = 84,826,940.85
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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.