Finding the Fourth Proportional to 12,748,756.88, 19,121,543.52 and 5,168,439.44
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Solution
The fourth proportional to 12,748,756.88, 19,121,543.52 and 5,168,439.44 is: 7,752,013.83
Step by Step Solution
- Step 1: Write the proportion equation
12,748,756.88 : 19,121,543.52 = 5,168,439.44 : x - Step 2: Convert to fraction form
12,748,756.88/19,121,543.52 = 5,168,439.44/x - Step 3: Cross multiply
12,748,756.88x = 19,121,543.52 × 5,168,439.44 - Step 4: Simplify right side
12,748,756.88x = 98,828,539,682,444.44 - Step 5: Solve for x
x = 98,828,539,682,444.44/12,748,756.88 - Step 6: Final answer
x = 7,752,013.83
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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.