Finding the Fourth Proportional to 91,981.99, 127,031.52 and 63,376.03
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Solution
The fourth proportional to 91,981.99, 127,031.52 and 63,376.03 is: 87,525.32
Step by Step Solution
- Step 1: Write the proportion equation
91,981.99 : 127,031.52 = 63,376.03 : x - Step 2: Convert to fraction form
91,981.99/127,031.52 = 63,376.03/x - Step 3: Cross multiply
91,981.99x = 127,031.52 × 63,376.03 - Step 4: Simplify right side
91,981.99x = 8,050,753,422.47 - Step 5: Solve for x
x = 8,050,753,422.47/91,981.99 - Step 6: Final answer
x = 87,525.32
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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.