Finding the Fourth Proportional to 77,136.32, 106,457.99 and 43,146.70
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Solution
The fourth proportional to 77,136.32, 106,457.99 and 43,146.70 is: 59,547.96
Step by Step Solution
- Step 1: Write the proportion equation
77,136.32 : 106,457.99 = 43,146.70 : x - Step 2: Convert to fraction form
77,136.32/106,457.99 = 43,146.70/x - Step 3: Cross multiply
77,136.32x = 106,457.99 × 43,146.70 - Step 4: Simplify right side
77,136.32x = 4,593,310,475.25 - Step 5: Solve for x
x = 4,593,310,475.25/77,136.32 - Step 6: Final answer
x = 59,547.96
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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.