Finding the Fourth Proportional to 99,823.80, 137,768.62 and 57,384.12
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Solution
The fourth proportional to 99,823.80, 137,768.62 and 57,384.12 is: 79,196.86
Step by Step Solution
- Step 1: Write the proportion equation
99,823.80 : 137,768.62 = 57,384.12 : x - Step 2: Convert to fraction form
99,823.80/137,768.62 = 57,384.12/x - Step 3: Cross multiply
99,823.80x = 137,768.62 × 57,384.12 - Step 4: Simplify right side
99,823.80x = 7,905,731,022.31 - Step 5: Solve for x
x = 7,905,731,022.31/99,823.80 - Step 6: Final answer
x = 79,196.86
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.