Finding the Fourth Proportional to 80,420.65, 110,978.34 and 46,427.99
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Solution
The fourth proportional to 80,420.65, 110,978.34 and 46,427.99 is: 64,069.38
Step by Step Solution
- Step 1: Write the proportion equation
80,420.65 : 110,978.34 = 46,427.99 : x - Step 2: Convert to fraction form
80,420.65/110,978.34 = 46,427.99/x - Step 3: Cross multiply
80,420.65x = 110,978.34 × 46,427.99 - Step 4: Simplify right side
80,420.65x = 5,152,501,259.74 - Step 5: Solve for x
x = 5,152,501,259.74/80,420.65 - Step 6: Final answer
x = 64,069.38
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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.