Finding the Fourth Proportional to 73,689,789.20, 110,534,683.80 and 66,515,335.70
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Solution
The fourth proportional to 73,689,789.20, 110,534,683.80 and 66,515,335.70 is: 99,773,003.55
Step by Step Solution
- Step 1: Write the proportion equation
73,689,789.20 : 110,534,683.80 = 66,515,335.70 : x - Step 2: Convert to fraction form
73,689,789.20/110,534,683.80 = 66,515,335.70/x - Step 3: Cross multiply
73,689,789.20x = 110,534,683.80 × 66,515,335.70 - Step 4: Simplify right side
73,689,789.20x = 7,352,251,599,450,352 - Step 5: Solve for x
x = 7,352,251,599,450,352/73,689,789.20 - Step 6: Final answer
x = 99,773,003.55
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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.