Finding the Fourth Proportional to 99,567.84, 137,402.55 and 57,133.02
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Solution
The fourth proportional to 99,567.84, 137,402.55 and 57,133.02 is: 78,842.95
Step by Step Solution
- Step 1: Write the proportion equation
99,567.84 : 137,402.55 = 57,133.02 : x - Step 2: Convert to fraction form
99,567.84/137,402.55 = 57,133.02/x - Step 3: Cross multiply
99,567.84x = 137,402.55 × 57,133.02 - Step 4: Simplify right side
99,567.84x = 7,850,222,637.20 - Step 5: Solve for x
x = 7,850,222,637.20/99,567.84 - Step 6: Final answer
x = 78,842.95
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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.