Finding the Fourth Proportional to 83,984,238.12, 125,976,358.74 and 20,158,830.12
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Solution
The fourth proportional to 83,984,238.12, 125,976,358.74 and 20,158,830.12 is: 30,238,245.55
Step by Step Solution
- Step 1: Write the proportion equation
83,984,238.12 : 125,976,358.74 = 20,158,830.12 : x - Step 2: Convert to fraction form
83,984,238.12/125,976,358.74 = 20,158,830.12/x - Step 3: Cross multiply
83,984,238.12x = 125,976,358.74 × 20,158,830.12 - Step 4: Simplify right side
83,984,238.12x = 2,539,536,014,975,837.50 - Step 5: Solve for x
x = 2,539,536,014,975,837.50/83,984,238.12 - Step 6: Final answer
x = 30,238,245.55
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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.