Finding the Fourth Proportional to 86,984.36, 119,955.76 and 56,760.02
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Solution
The fourth proportional to 86,984.36, 119,955.76 and 56,760.02 is: 78,274.89
Step by Step Solution
- Step 1: Write the proportion equation
86,984.36 : 119,955.76 = 56,760.02 : x - Step 2: Convert to fraction form
86,984.36/119,955.76 = 56,760.02/x - Step 3: Cross multiply
86,984.36x = 119,955.76 × 56,760.02 - Step 4: Simplify right side
86,984.36x = 6,808,690,595.04 - Step 5: Solve for x
x = 6,808,690,595.04/86,984.36 - Step 6: Final answer
x = 78,274.89
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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.