Finding the Fourth Proportional to 70,923.24, 106,370.12 and 20,991.62
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Solution
The fourth proportional to 70,923.24, 106,370.12 and 20,991.62 is: 31,483.07
Step by Step Solution
- Step 1: Write the proportion equation
70,923.24 : 106,370.12 = 20,991.62 : x - Step 2: Convert to fraction form
70,923.24/106,370.12 = 20,991.62/x - Step 3: Cross multiply
70,923.24x = 106,370.12 × 20,991.62 - Step 4: Simplify right side
70,923.24x = 2,232,881,456.80 - Step 5: Solve for x
x = 2,232,881,456.80/70,923.24 - Step 6: Final answer
x = 31,483.07
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.