Finding the Fourth Proportional to 9,259,516.12, 12,778,130.60 and 5,129,815.68
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Solution
The fourth proportional to 9,259,516.12, 12,778,130.60 and 5,129,815.68 is: 7,079,144.73
Step by Step Solution
- Step 1: Write the proportion equation
9,259,516.12 : 12,778,130.60 = 5,129,815.68 : x - Step 2: Convert to fraction form
9,259,516.12/12,778,130.60 = 5,129,815.68/x - Step 3: Cross multiply
9,259,516.12x = 12,778,130.60 × 5,129,815.68 - Step 4: Simplify right side
9,259,516.12x = 65,549,454,712,967.80 - Step 5: Solve for x
x = 65,549,454,712,967.80/9,259,516.12 - Step 6: Final answer
x = 7,079,144.73
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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.