Finding the Fourth Proportional to 70,023.29, 105,018.93 and 20,102.99
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Solution
The fourth proportional to 70,023.29, 105,018.93 and 20,102.99 is: 30,149.88
Step by Step Solution
- Step 1: Write the proportion equation
70,023.29 : 105,018.93 = 20,102.99 : x - Step 2: Convert to fraction form
70,023.29/105,018.93 = 20,102.99/x - Step 3: Cross multiply
70,023.29x = 105,018.93 × 20,102.99 - Step 4: Simplify right side
70,023.29x = 2,111,193,974.51 - Step 5: Solve for x
x = 2,111,193,974.51/70,023.29 - Step 6: Final answer
x = 30,149.88
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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.