Finding the Fourth Proportional to 90,136.24, 124,387.76 and 51,881.81
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Solution
The fourth proportional to 90,136.24, 124,387.76 and 51,881.81 is: 71,596.75
Step by Step Solution
- Step 1: Write the proportion equation
90,136.24 : 124,387.76 = 51,881.81 : x - Step 2: Convert to fraction form
90,136.24/124,387.76 = 51,881.81/x - Step 3: Cross multiply
90,136.24x = 124,387.76 × 51,881.81 - Step 4: Simplify right side
90,136.24x = 6,453,462,130.65 - Step 5: Solve for x
x = 6,453,462,130.65/90,136.24 - Step 6: Final answer
x = 71,596.75
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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.