Finding the Fourth Proportional to 90,219,064.78, 124,503,503.79 and 48,966,451.66
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Solution
The fourth proportional to 90,219,064.78, 124,503,503.79 and 48,966,451.66 is: 67,574,351.55
Step by Step Solution
- Step 1: Write the proportion equation
90,219,064.78 : 124,503,503.79 = 48,966,451.66 : x - Step 2: Convert to fraction form
90,219,064.78/124,503,503.79 = 48,966,451.66/x - Step 3: Cross multiply
90,219,064.78x = 124,503,503.79 × 48,966,451.66 - Step 4: Simplify right side
90,219,064.78x = 6,096,494,799,833,662 - Step 5: Solve for x
x = 6,096,494,799,833,662/90,219,064.78 - Step 6: Final answer
x = 67,574,351.55
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.