Finding the Fourth Proportional to 86,289,415.20, 129,434,122.80 and 24,878,455.20
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Solution
The fourth proportional to 86,289,415.20, 129,434,122.80 and 24,878,455.20 is: 37,317,682.80
Step by Step Solution
- Step 1: Write the proportion equation
86,289,415.20 : 129,434,122.80 = 24,878,455.20 : x - Step 2: Convert to fraction form
86,289,415.20/129,434,122.80 = 24,878,455.20/x - Step 3: Cross multiply
86,289,415.20x = 129,434,122.80 × 24,878,455.20 - Step 4: Simplify right side
86,289,415.20x = 3,220,121,025,431,098.50 - Step 5: Solve for x
x = 3,220,121,025,431,098.50/86,289,415.20 - Step 6: Final answer
x = 37,317,682.80
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Double scale
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Similar ratio
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1.5x scale
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.