Finding the Fourth Proportional to 86,940,115.80, 130,410,173.70 and 61,430,947.80
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Solution
The fourth proportional to 86,940,115.80, 130,410,173.70 and 61,430,947.80 is: 92,146,421.70
Step by Step Solution
- Step 1: Write the proportion equation
86,940,115.80 : 130,410,173.70 = 61,430,947.80 : x - Step 2: Convert to fraction form
86,940,115.80/130,410,173.70 = 61,430,947.80/x - Step 3: Cross multiply
86,940,115.80x = 130,410,173.70 × 61,430,947.80 - Step 4: Simplify right side
86,940,115.80x = 8,011,220,573,153,633 - Step 5: Solve for x
x = 8,011,220,573,153,633/86,940,115.80 - Step 6: Final answer
x = 92,146,421.70
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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.