Finding the Fourth Proportional to 85,866.42, 128,763.18 and 46,412.94
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Solution
The fourth proportional to 85,866.42, 128,763.18 and 46,412.94 is: 69,599.71
Step by Step Solution
- Step 1: Write the proportion equation
85,866.42 : 128,763.18 = 46,412.94 : x - Step 2: Convert to fraction form
85,866.42/128,763.18 = 46,412.94/x - Step 3: Cross multiply
85,866.42x = 128,763.18 × 46,412.94 - Step 4: Simplify right side
85,866.42x = 5,976,277,747.55 - Step 5: Solve for x
x = 5,976,277,747.55/85,866.42 - Step 6: Final answer
x = 69,599.71
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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.