Finding the Fourth Proportional to 86,681.99, 130,013.67 and 58,781.14
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Solution
The fourth proportional to 86,681.99, 130,013.67 and 58,781.14 is: 88,165.39
Step by Step Solution
- Step 1: Write the proportion equation
86,681.99 : 130,013.67 = 58,781.14 : x - Step 2: Convert to fraction form
86,681.99/130,013.67 = 58,781.14/x - Step 3: Cross multiply
86,681.99x = 130,013.67 × 58,781.14 - Step 4: Simplify right side
86,681.99x = 7,642,351,738.18 - Step 5: Solve for x
x = 7,642,351,738.18/86,681.99 - Step 6: Final answer
x = 88,165.39
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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.