Finding the Fourth Proportional to 86,948,657.70, 130,422,986.55 and 82,697,129.70
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Solution
The fourth proportional to 86,948,657.70, 130,422,986.55 and 82,697,129.70 is: 124,045,694.55
Step by Step Solution
- Step 1: Write the proportion equation
86,948,657.70 : 130,422,986.55 = 82,697,129.70 : x - Step 2: Convert to fraction form
86,948,657.70/130,422,986.55 = 82,697,129.70/x - Step 3: Cross multiply
86,948,657.70x = 130,422,986.55 × 82,697,129.70 - Step 4: Simplify right side
86,948,657.70x = 10,785,606,634,586,706 - Step 5: Solve for x
x = 10,785,606,634,586,706/86,948,657.70 - Step 6: Final answer
x = 124,045,694.55
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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.