Finding the Fourth Proportional to 81,124.68, 121,390.98 and 47,860.68
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Solution
The fourth proportional to 81,124.68, 121,390.98 and 47,860.68 is: 71,616.37
Step by Step Solution
- Step 1: Write the proportion equation
81,124.68 : 121,390.98 = 47,860.68 : x - Step 2: Convert to fraction form
81,124.68/121,390.98 = 47,860.68/x - Step 3: Cross multiply
81,124.68x = 121,390.98 × 47,860.68 - Step 4: Simplify right side
81,124.68x = 5,809,854,848.67 - Step 5: Solve for x
x = 5,809,854,848.67/81,124.68 - Step 6: Final answer
x = 71,616.37
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.