Finding the Fourth Proportional to 98,466.48, 135,888.84 and 56,031.12
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Solution
The fourth proportional to 98,466.48, 135,888.84 and 56,031.12 is: 77,325.85
Step by Step Solution
- Step 1: Write the proportion equation
98,466.48 : 135,888.84 = 56,031.12 : x - Step 2: Convert to fraction form
98,466.48/135,888.84 = 56,031.12/x - Step 3: Cross multiply
98,466.48x = 135,888.84 × 56,031.12 - Step 4: Simplify right side
98,466.48x = 7,614,003,900.70 - Step 5: Solve for x
x = 7,614,003,900.70/98,466.48 - Step 6: Final answer
x = 77,325.85
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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.