Finding the Fourth Proportional to 80,754,655.20, 121,131,982.80 and 46,742,431.20
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Solution
The fourth proportional to 80,754,655.20, 121,131,982.80 and 46,742,431.20 is: 70,113,646.80
Step by Step Solution
- Step 1: Write the proportion equation
80,754,655.20 : 121,131,982.80 = 46,742,431.20 : x - Step 2: Convert to fraction form
80,754,655.20/121,131,982.80 = 46,742,431.20/x - Step 3: Cross multiply
80,754,655.20x = 121,131,982.80 × 46,742,431.20 - Step 4: Simplify right side
80,754,655.20x = 5,662,003,372,148,584 - Step 5: Solve for x
x = 5,662,003,372,148,584/80,754,655.20 - Step 6: Final answer
x = 70,113,646.80
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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.