Finding the Fourth Proportional to 86,775.36, 130,130.19 and 47,310.99
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Solution
The fourth proportional to 86,775.36, 130,130.19 and 47,310.99 is: 70,948.57
Step by Step Solution
- Step 1: Write the proportion equation
86,775.36 : 130,130.19 = 47,310.99 : x - Step 2: Convert to fraction form
86,775.36/130,130.19 = 47,310.99/x - Step 3: Cross multiply
86,775.36x = 130,130.19 × 47,310.99 - Step 4: Simplify right side
86,775.36x = 6,156,588,117.79 - Step 5: Solve for x
x = 6,156,588,117.79/86,775.36 - Step 6: Final answer
x = 70,948.57
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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.