Finding the Fourth Proportional to 61,408,492.74, 84,708,194.58 and 39,678,460.74
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Solution
The fourth proportional to 61,408,492.74, 84,708,194.58 and 39,678,460.74 is: 54,733,321.45
Step by Step Solution
- Step 1: Write the proportion equation
61,408,492.74 : 84,708,194.58 = 39,678,460.74 : x - Step 2: Convert to fraction form
61,408,492.74/84,708,194.58 = 39,678,460.74/x - Step 3: Cross multiply
61,408,492.74x = 84,708,194.58 × 39,678,460.74 - Step 4: Simplify right side
61,408,492.74x = 3,361,090,772,998,811 - Step 5: Solve for x
x = 3,361,090,772,998,811/61,408,492.74 - Step 6: Final answer
x = 54,733,321.45
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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.