Finding the Fourth Proportional to 87,347.34, 120,417.21 and 73,864.44
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Solution
The fourth proportional to 87,347.34, 120,417.21 and 73,864.44 is: 101,829.66
Step by Step Solution
- Step 1: Write the proportion equation
87,347.34 : 120,417.21 = 73,864.44 : x - Step 2: Convert to fraction form
87,347.34/120,417.21 = 73,864.44/x - Step 3: Cross multiply
87,347.34x = 120,417.21 × 73,864.44 - Step 4: Simplify right side
87,347.34x = 8,894,549,783.01 - Step 5: Solve for x
x = 8,894,549,783.01/87,347.34 - Step 6: Final answer
x = 101,829.66
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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.