Finding the Fourth Proportional to 101,760.21, 140,412.26 and 56,430.99
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Solution
The fourth proportional to 101,760.21, 140,412.26 and 56,430.99 is: 77,865.43
Step by Step Solution
- Step 1: Write the proportion equation
101,760.21 : 140,412.26 = 56,430.99 : x - Step 2: Convert to fraction form
101,760.21/140,412.26 = 56,430.99/x - Step 3: Cross multiply
101,760.21x = 140,412.26 × 56,430.99 - Step 4: Simplify right side
101,760.21x = 7,923,602,981.01 - Step 5: Solve for x
x = 7,923,602,981.01/101,760.21 - Step 6: Final answer
x = 77,865.43
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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.