Finding the Fourth Proportional to 53,465,686.70, 80,056,812.45 and 42,128,278.70
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Solution
The fourth proportional to 53,465,686.70, 80,056,812.45 and 42,128,278.70 is: 63,080,751.69
Step by Step Solution
- Step 1: Write the proportion equation
53,465,686.70 : 80,056,812.45 = 42,128,278.70 : x - Step 2: Convert to fraction form
53,465,686.70/80,056,812.45 = 42,128,278.70/x - Step 3: Cross multiply
53,465,686.70x = 80,056,812.45 × 42,128,278.70 - Step 4: Simplify right side
53,465,686.70x = 3,372,655,706,727,230 - Step 5: Solve for x
x = 3,372,655,706,727,230/53,465,686.70 - Step 6: Final answer
x = 63,080,751.69
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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.