Finding the Fourth Proportional to 101,402.80, 139,934.63 and 56,079.96
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Solution
The fourth proportional to 101,402.80, 139,934.63 and 56,079.96 is: 77,389.66
Step by Step Solution
- Step 1: Write the proportion equation
101,402.80 : 139,934.63 = 56,079.96 : x - Step 2: Convert to fraction form
101,402.80/139,934.63 = 56,079.96/x - Step 3: Cross multiply
101,402.80x = 139,934.63 × 56,079.96 - Step 4: Simplify right side
101,402.80x = 7,847,527,870.93 - Step 5: Solve for x
x = 7,847,527,870.93/101,402.80 - Step 6: Final answer
x = 77,389.66
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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.