Finding the Fourth Proportional to 101,752.69, 140,409.43 and 56,430.53
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Solution
The fourth proportional to 101,752.69, 140,409.43 and 56,430.53 is: 77,868.99
Step by Step Solution
- Step 1: Write the proportion equation
101,752.69 : 140,409.43 = 56,430.53 : x - Step 2: Convert to fraction form
101,752.69/140,409.43 = 56,430.53/x - Step 3: Cross multiply
101,752.69x = 140,409.43 × 56,430.53 - Step 4: Simplify right side
101,752.69x = 7,923,378,551.90 - Step 5: Solve for x
x = 7,923,378,551.90/101,752.69 - Step 6: Final answer
x = 77,868.99
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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.