Finding the Fourth Proportional to 76,996,983.60, 115,495,475.40 and 48,331,537.20
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Solution
The fourth proportional to 76,996,983.60, 115,495,475.40 and 48,331,537.20 is: 72,497,305.80
Step by Step Solution
- Step 1: Write the proportion equation
76,996,983.60 : 115,495,475.40 = 48,331,537.20 : x - Step 2: Convert to fraction form
76,996,983.60/115,495,475.40 = 48,331,537.20/x - Step 3: Cross multiply
76,996,983.60x = 115,495,475.40 × 48,331,537.20 - Step 4: Simplify right side
76,996,983.60x = 5,582,073,865,726,786 - Step 5: Solve for x
x = 5,582,073,865,726,786/76,996,983.60 - Step 6: Final answer
x = 72,497,305.80
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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.