Finding the Fourth Proportional to 105,690.07, 145,847.67 and 63,271.99
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Solution
The fourth proportional to 105,690.07, 145,847.67 and 63,271.99 is: 87,312.58
Step by Step Solution
- Step 1: Write the proportion equation
105,690.07 : 145,847.67 = 63,271.99 : x - Step 2: Convert to fraction form
105,690.07/145,847.67 = 63,271.99/x - Step 3: Cross multiply
105,690.07x = 145,847.67 × 63,271.99 - Step 4: Simplify right side
105,690.07x = 9,228,072,317.76 - Step 5: Solve for x
x = 9,228,072,317.76/105,690.07 - Step 6: Final answer
x = 87,312.58
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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.