Finding the Fourth Proportional to 86,848.13, 130,043.81 and 69,890.99
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Solution
The fourth proportional to 86,848.13, 130,043.81 and 69,890.99 is: 104,652.68
Step by Step Solution
- Step 1: Write the proportion equation
86,848.13 : 130,043.81 = 69,890.99 : x - Step 2: Convert to fraction form
86,848.13/130,043.81 = 69,890.99/x - Step 3: Cross multiply
86,848.13x = 130,043.81 × 69,890.99 - Step 4: Simplify right side
86,848.13x = 9,088,890,148.78 - Step 5: Solve for x
x = 9,088,890,148.78/86,848.13 - Step 6: Final answer
x = 104,652.68
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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.