Finding the Fourth Proportional to 80,986,507.80, 121,490,417.70 and 29,904,408.60
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Solution
The fourth proportional to 80,986,507.80, 121,490,417.70 and 29,904,408.60 is: 44,860,547.65
Step by Step Solution
- Step 1: Write the proportion equation
80,986,507.80 : 121,490,417.70 = 29,904,408.60 : x - Step 2: Convert to fraction form
80,986,507.80/121,490,417.70 = 29,904,408.60/x - Step 3: Cross multiply
80,986,507.80x = 121,490,417.70 × 29,904,408.60 - Step 4: Simplify right side
80,986,507.80x = 3,633,099,091,885,472.50 - Step 5: Solve for x
x = 3,633,099,091,885,472.50/80,986,507.80 - Step 6: Final answer
x = 44,860,547.65
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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.