Finding the Fourth Proportional to 87,950.08, 121,328.96 and 57,723.20
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Solution
The fourth proportional to 87,950.08, 121,328.96 and 57,723.20 is: 79,630.35
Step by Step Solution
- Step 1: Write the proportion equation
87,950.08 : 121,328.96 = 57,723.20 : x - Step 2: Convert to fraction form
87,950.08/121,328.96 = 57,723.20/x - Step 3: Cross multiply
87,950.08x = 121,328.96 × 57,723.20 - Step 4: Simplify right side
87,950.08x = 7,003,495,823.87 - Step 5: Solve for x
x = 7,003,495,823.87/87,950.08 - Step 6: Final answer
x = 79,630.35
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1.5x scale
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.