Finding the Fourth Proportional to 70,374.24, 105,574.69 and 28,257.63
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Solution
The fourth proportional to 70,374.24, 105,574.69 and 28,257.63 is: 42,391.80
Step by Step Solution
- Step 1: Write the proportion equation
70,374.24 : 105,574.69 = 28,257.63 : x - Step 2: Convert to fraction form
70,374.24/105,574.69 = 28,257.63/x - Step 3: Cross multiply
70,374.24x = 105,574.69 × 28,257.63 - Step 4: Simplify right side
70,374.24x = 2,983,291,057.59 - Step 5: Solve for x
x = 2,983,291,057.59/70,374.24 - Step 6: Final answer
x = 42,391.80
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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.