Finding the Fourth Proportional to 90,440.27, 124,663.77 and 71,288.99
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Solution
The fourth proportional to 90,440.27, 124,663.77 and 71,288.99 is: 98,265.45
Step by Step Solution
- Step 1: Write the proportion equation
90,440.27 : 124,663.77 = 71,288.99 : x - Step 2: Convert to fraction form
90,440.27/124,663.77 = 71,288.99/x - Step 3: Cross multiply
90,440.27x = 124,663.77 × 71,288.99 - Step 4: Simplify right side
90,440.27x = 8,887,154,252.89 - Step 5: Solve for x
x = 8,887,154,252.89/90,440.27 - Step 6: Final answer
x = 98,265.45
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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.