Finding the Fourth Proportional to 8,128,525.57, 12,167,378.55 and 5,246,039.32
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Solution
The fourth proportional to 8,128,525.57, 12,167,378.55 and 5,246,039.32 is: 7,852,659.84
Step by Step Solution
- Step 1: Write the proportion equation
8,128,525.57 : 12,167,378.55 = 5,246,039.32 : x - Step 2: Convert to fraction form
8,128,525.57/12,167,378.55 = 5,246,039.32/x - Step 3: Cross multiply
8,128,525.57x = 12,167,378.55 × 5,246,039.32 - Step 4: Simplify right side
8,128,525.57x = 63,830,546,264,206.14 - Step 5: Solve for x
x = 63,830,546,264,206.14/8,128,525.57 - Step 6: Final answer
x = 7,852,659.84
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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.