Finding the Fourth Proportional to 30,513,567.88, 42,112,378.74 and 18,290,018.44
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Solution
The fourth proportional to 30,513,567.88, 42,112,378.74 and 18,290,018.44 is: 25,242,416.32
Step by Step Solution
- Step 1: Write the proportion equation
30,513,567.88 : 42,112,378.74 = 18,290,018.44 : x - Step 2: Convert to fraction form
30,513,567.88/42,112,378.74 = 18,290,018.44/x - Step 3: Cross multiply
30,513,567.88x = 42,112,378.74 × 18,290,018.44 - Step 4: Simplify right side
30,513,567.88x = 770,236,183,706,864 - Step 5: Solve for x
x = 770,236,183,706,864/30,513,567.88 - Step 6: Final answer
x = 25,242,416.32
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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.