Finding the Fourth Proportional to 85,698.14, 128,547.41 and 29,539.62
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Solution
The fourth proportional to 85,698.14, 128,547.41 and 29,539.62 is: 44,309.50
Step by Step Solution
- Step 1: Write the proportion equation
85,698.14 : 128,547.41 = 29,539.62 : x - Step 2: Convert to fraction form
85,698.14/128,547.41 = 29,539.62/x - Step 3: Cross multiply
85,698.14x = 128,547.41 × 29,539.62 - Step 4: Simplify right side
85,698.14x = 3,797,241,495.69 - Step 5: Solve for x
x = 3,797,241,495.69/85,698.14 - Step 6: Final answer
x = 44,309.50
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1.5x scale
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.