Finding the Fourth Proportional to 39,093,136.21, 53,948,534.64 and 21,689,439.91
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Solution
The fourth proportional to 39,093,136.21, 53,948,534.64 and 21,689,439.91 is: 29,931,430.78
Step by Step Solution
- Step 1: Write the proportion equation
39,093,136.21 : 53,948,534.64 = 21,689,439.91 : x - Step 2: Convert to fraction form
39,093,136.21/53,948,534.64 = 21,689,439.91/x - Step 3: Cross multiply
39,093,136.21x = 53,948,534.64 × 21,689,439.91 - Step 4: Simplify right side
39,093,136.21x = 1,170,113,500,516,090.50 - Step 5: Solve for x
x = 1,170,113,500,516,090.50/39,093,136.21 - Step 6: Final answer
x = 29,931,430.78
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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.