Finding the Fourth Proportional to 85,373,965.08, 128,041,781.13 and 39,271,556.75
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Solution
The fourth proportional to 85,373,965.08, 128,041,781.13 and 39,271,556.75 is: 58,898,518.64
Step by Step Solution
- Step 1: Write the proportion equation
85,373,965.08 : 128,041,781.13 = 39,271,556.75 : x - Step 2: Convert to fraction form
85,373,965.08/128,041,781.13 = 39,271,556.75/x - Step 3: Cross multiply
85,373,965.08x = 128,041,781.13 × 39,271,556.75 - Step 4: Simplify right side
85,373,965.08x = 5,028,400,073,377,665 - Step 5: Solve for x
x = 5,028,400,073,377,665/85,373,965.08 - Step 6: Final answer
x = 58,898,518.64
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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.