Finding the Fourth Proportional to 101,437.74, 139,988.21 and 56,114.94
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Solution
The fourth proportional to 101,437.74, 139,988.21 and 56,114.94 is: 77,440.90
Step by Step Solution
- Step 1: Write the proportion equation
101,437.74 : 139,988.21 = 56,114.94 : x - Step 2: Convert to fraction form
101,437.74/139,988.21 = 56,114.94/x - Step 3: Cross multiply
101,437.74x = 139,988.21 × 56,114.94 - Step 4: Simplify right side
101,437.74x = 7,855,430,074.25 - Step 5: Solve for x
x = 7,855,430,074.25/101,437.74 - Step 6: Final answer
x = 77,440.90
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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.