Finding the Fourth Proportional to 101,397.24, 139,929.12 and 56,072.88
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Solution
The fourth proportional to 101,397.24, 139,929.12 and 56,072.88 is: 77,381.09
Step by Step Solution
- Step 1: Write the proportion equation
101,397.24 : 139,929.12 = 56,072.88 : x - Step 2: Convert to fraction form
101,397.24/139,929.12 = 56,072.88/x - Step 3: Cross multiply
101,397.24x = 139,929.12 × 56,072.88 - Step 4: Simplify right side
101,397.24x = 7,846,228,754.27 - Step 5: Solve for x
x = 7,846,228,754.27/101,397.24 - Step 6: Final answer
x = 77,381.09
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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.