Finding the Fourth Proportional to 42,110,515.80, 63,165,773.70 and 28,239,905.70
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Solution
The fourth proportional to 42,110,515.80, 63,165,773.70 and 28,239,905.70 is: 42,359,858.55
Step by Step Solution
- Step 1: Write the proportion equation
42,110,515.80 : 63,165,773.70 = 28,239,905.70 : x - Step 2: Convert to fraction form
42,110,515.80/63,165,773.70 = 28,239,905.70/x - Step 3: Cross multiply
42,110,515.80x = 63,165,773.70 × 28,239,905.70 - Step 4: Simplify right side
42,110,515.80x = 1,783,795,492,755,540.25 - Step 5: Solve for x
x = 1,783,795,492,755,540.25/42,110,515.80 - Step 6: Final answer
x = 42,359,858.55
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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.