Finding the Fourth Proportional to 99,804.98, 137,726.06 and 56,780.44
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Solution
The fourth proportional to 99,804.98, 137,726.06 and 56,780.44 is: 78,354.26
Step by Step Solution
- Step 1: Write the proportion equation
99,804.98 : 137,726.06 = 56,780.44 : x - Step 2: Convert to fraction form
99,804.98/137,726.06 = 56,780.44/x - Step 3: Cross multiply
99,804.98x = 137,726.06 × 56,780.44 - Step 4: Simplify right side
99,804.98x = 7,820,145,658.05 - Step 5: Solve for x
x = 7,820,145,658.05/99,804.98 - Step 6: Final answer
x = 78,354.26
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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.