Finding the Fourth Proportional to 39,306,990,449.04, 54,243,642,813.48 and 21,485,719,124.88
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Solution
The fourth proportional to 39,306,990,449.04, 54,243,642,813.48 and 21,485,719,124.88 is: 29,650,290,202.50
Step by Step Solution
- Step 1: Write the proportion equation
39,306,990,449.04 : 54,243,642,813.48 = 21,485,719,124.88 : x - Step 2: Convert to fraction form
39,306,990,449.04/54,243,642,813.48 = 21,485,719,124.88/x - Step 3: Cross multiply
39,306,990,449.04x = 54,243,642,813.48 × 21,485,719,124.88 - Step 4: Simplify right side
39,306,990,449.04x = 1,165,463,673,800,746,991,616 - Step 5: Solve for x
x = 1,165,463,673,800,746,991,616/39,306,990,449.04 - Step 6: Final answer
x = 29,650,290,202.50
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1.5x scale
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.