Finding the Fourth Proportional to 70,378.62, 105,567.00 and 28,257.94
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Solution
The fourth proportional to 70,378.62, 105,567.00 and 28,257.94 is: 42,386.53
Step by Step Solution
- Step 1: Write the proportion equation
70,378.62 : 105,567.00 = 28,257.94 : x - Step 2: Convert to fraction form
70,378.62/105,567.00 = 28,257.94/x - Step 3: Cross multiply
70,378.62x = 105,567.00 × 28,257.94 - Step 4: Simplify right side
70,378.62x = 2,983,105,681.06 - Step 5: Solve for x
x = 2,983,105,681.06/70,378.62 - Step 6: Final answer
x = 42,386.53
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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.