Finding the Fourth Proportional to 39,005,765.79, 53,829,701.96 and 21,365,909.79
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Solution
The fourth proportional to 39,005,765.79, 53,829,701.96 and 21,365,909.79 is: 29,485,911.45
Step by Step Solution
- Step 1: Write the proportion equation
39,005,765.79 : 53,829,701.96 = 21,365,909.79 : x - Step 2: Convert to fraction form
39,005,765.79/53,829,701.96 = 21,365,909.79/x - Step 3: Cross multiply
39,005,765.79x = 53,829,701.96 × 21,365,909.79 - Step 4: Simplify right side
39,005,765.79x = 1,150,120,556,099,946.25 - Step 5: Solve for x
x = 1,150,120,556,099,946.25/39,005,765.79 - Step 6: Final answer
x = 29,485,911.45
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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.