Finding the Fourth Proportional to 7,177,502.60, 10,772,129.10 and 7,121,515.40
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Solution
The fourth proportional to 7,177,502.60, 10,772,129.10 and 7,121,515.40 is: 10,688,102.47
Step by Step Solution
- Step 1: Write the proportion equation
7,177,502.60 : 10,772,129.10 = 7,121,515.40 : x - Step 2: Convert to fraction form
7,177,502.60/10,772,129.10 = 7,121,515.40/x - Step 3: Cross multiply
7,177,502.60x = 10,772,129.10 × 7,121,515.40 - Step 4: Simplify right side
7,177,502.60x = 76,713,883,276,438.14 - Step 5: Solve for x
x = 76,713,883,276,438.14/7,177,502.60 - Step 6: Final answer
x = 10,688,102.47
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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.