Finding the Fourth Proportional to 90,420.54, 124,776.99 and 50,135.01
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Solution
The fourth proportional to 90,420.54, 124,776.99 and 50,135.01 is: 69,184.45
Step by Step Solution
- Step 1: Write the proportion equation
90,420.54 : 124,776.99 = 50,135.01 : x - Step 2: Convert to fraction form
90,420.54/124,776.99 = 50,135.01/x - Step 3: Cross multiply
90,420.54x = 124,776.99 × 50,135.01 - Step 4: Simplify right side
90,420.54x = 6,255,695,641.42 - Step 5: Solve for x
x = 6,255,695,641.42/90,420.54 - Step 6: Final answer
x = 69,184.45
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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.