Finding the Fourth Proportional to 101,762.40, 140,440.74 and 56,454.99
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Solution
The fourth proportional to 101,762.40, 140,440.74 and 56,454.99 is: 77,912.67
Step by Step Solution
- Step 1: Write the proportion equation
101,762.40 : 140,440.74 = 56,454.99 : x - Step 2: Convert to fraction form
101,762.40/140,440.74 = 56,454.99/x - Step 3: Cross multiply
101,762.40x = 140,440.74 × 56,454.99 - Step 4: Simplify right side
101,762.40x = 7,928,580,572.29 - Step 5: Solve for x
x = 7,928,580,572.29/101,762.40 - Step 6: Final answer
x = 77,912.67
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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.