Finding the Fourth Proportional to 90,862.69, 136,303.36 and 34,749.99
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Solution
The fourth proportional to 90,862.69, 136,303.36 and 34,749.99 is: 52,128.56
Step by Step Solution
- Step 1: Write the proportion equation
90,862.69 : 136,303.36 = 34,749.99 : x - Step 2: Convert to fraction form
90,862.69/136,303.36 = 34,749.99/x - Step 3: Cross multiply
90,862.69x = 136,303.36 × 34,749.99 - Step 4: Simplify right side
90,862.69x = 4,736,540,756.07 - Step 5: Solve for x
x = 4,736,540,756.07/90,862.69 - Step 6: Final answer
x = 52,128.56
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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.