Finding the Fourth Proportional to 43,178,869.80, 64,775,562.30 and 12,889,794.60
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Solution
The fourth proportional to 43,178,869.80, 64,775,562.30 and 12,889,794.60 is: 19,336,858.45
Step by Step Solution
- Step 1: Write the proportion equation
43,178,869.80 : 64,775,562.30 = 12,889,794.60 : x - Step 2: Convert to fraction form
43,178,869.80/64,775,562.30 = 12,889,794.60/x - Step 3: Cross multiply
43,178,869.80x = 64,775,562.30 × 12,889,794.60 - Step 4: Simplify right side
43,178,869.80x = 834,943,693,146,503.50 - Step 5: Solve for x
x = 834,943,693,146,503.50/43,178,869.80 - Step 6: Final answer
x = 19,336,858.45
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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.