Finding the Fourth Proportional to 90,605,420.25, 125,031,960.62 and 55,382,201.21
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Solution
The fourth proportional to 90,605,420.25, 125,031,960.62 and 55,382,201.21 is: 76,425,286.50
Step by Step Solution
- Step 1: Write the proportion equation
90,605,420.25 : 125,031,960.62 = 55,382,201.21 : x - Step 2: Convert to fraction form
90,605,420.25/125,031,960.62 = 55,382,201.21/x - Step 3: Cross multiply
90,605,420.25x = 125,031,960.62 × 55,382,201.21 - Step 4: Simplify right side
90,605,420.25x = 6,924,545,200,980,989 - Step 5: Solve for x
x = 6,924,545,200,980,989/90,605,420.25 - Step 6: Final answer
x = 76,425,286.50
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.