Finding the Fourth Proportional to 99,051.48, 136,657.80 and 56,579.94
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Solution
The fourth proportional to 99,051.48, 136,657.80 and 56,579.94 is: 78,061.33
Step by Step Solution
- Step 1: Write the proportion equation
99,051.48 : 136,657.80 = 56,579.94 : x - Step 2: Convert to fraction form
99,051.48/136,657.80 = 56,579.94/x - Step 3: Cross multiply
99,051.48x = 136,657.80 × 56,579.94 - Step 4: Simplify right side
99,051.48x = 7,732,090,124.53 - Step 5: Solve for x
x = 7,732,090,124.53/99,051.48 - Step 6: Final answer
x = 78,061.33
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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.