Finding the Fourth Proportional to 79,241,371.20, 118,862,056.80 and 28,128,556.80
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Solution
The fourth proportional to 79,241,371.20, 118,862,056.80 and 28,128,556.80 is: 42,192,835.20
Step by Step Solution
- Step 1: Write the proportion equation
79,241,371.20 : 118,862,056.80 = 28,128,556.80 : x - Step 2: Convert to fraction form
79,241,371.20/118,862,056.80 = 28,128,556.80/x - Step 3: Cross multiply
79,241,371.20x = 118,862,056.80 × 28,128,556.80 - Step 4: Simplify right side
79,241,371.20x = 3,343,418,116,063,626 - Step 5: Solve for x
x = 3,343,418,116,063,626/79,241,371.20 - Step 6: Final answer
x = 42,192,835.20
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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.