Finding the Fourth Proportional to 90,030.24, 124,239.12 and 49,743.36
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Solution
The fourth proportional to 90,030.24, 124,239.12 and 49,743.36 is: 68,644.39
Step by Step Solution
- Step 1: Write the proportion equation
90,030.24 : 124,239.12 = 49,743.36 : x - Step 2: Convert to fraction form
90,030.24/124,239.12 = 49,743.36/x - Step 3: Cross multiply
90,030.24x = 124,239.12 × 49,743.36 - Step 4: Simplify right side
90,030.24x = 6,180,071,272.24 - Step 5: Solve for x
x = 6,180,071,272.24/90,030.24 - Step 6: Final answer
x = 68,644.39
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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.