Finding the Fourth Proportional to 99,029.16, 136,657.68 and 56,587.70
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Solution
The fourth proportional to 99,029.16, 136,657.68 and 56,587.70 is: 78,089.56
Step by Step Solution
- Step 1: Write the proportion equation
99,029.16 : 136,657.68 = 56,587.70 : x - Step 2: Convert to fraction form
99,029.16/136,657.68 = 56,587.70/x - Step 3: Cross multiply
99,029.16x = 136,657.68 × 56,587.70 - Step 4: Simplify right side
99,029.16x = 7,733,143,115.25 - Step 5: Solve for x
x = 7,733,143,115.25/99,029.16 - Step 6: Final answer
x = 78,089.56
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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.