Finding the Fourth Proportional to 101,385.13, 139,899.27 and 56,056.99
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Solution
The fourth proportional to 101,385.13, 139,899.27 and 56,056.99 is: 77,351.90
Step by Step Solution
- Step 1: Write the proportion equation
101,385.13 : 139,899.27 = 56,056.99 : x - Step 2: Convert to fraction form
101,385.13/139,899.27 = 56,056.99/x - Step 3: Cross multiply
101,385.13x = 139,899.27 × 56,056.99 - Step 4: Simplify right side
101,385.13x = 7,842,331,979.40 - Step 5: Solve for x
x = 7,842,331,979.40/101,385.13 - Step 6: Final answer
x = 77,351.90
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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.