Finding the Fourth Proportional to 86,666.04, 129,791.28 and 47,125.08
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Solution
The fourth proportional to 86,666.04, 129,791.28 and 47,125.08 is: 70,574.64
Step by Step Solution
- Step 1: Write the proportion equation
86,666.04 : 129,791.28 = 47,125.08 : x - Step 2: Convert to fraction form
86,666.04/129,791.28 = 47,125.08/x - Step 3: Cross multiply
86,666.04x = 129,791.28 × 47,125.08 - Step 4: Simplify right side
86,666.04x = 6,116,424,453.30 - Step 5: Solve for x
x = 6,116,424,453.30/86,666.04 - Step 6: Final answer
x = 70,574.64
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1.5x scale
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.