Finding the Fourth Proportional to 86,569.74, 129,854.70 and 47,203.74
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Solution
The fourth proportional to 86,569.74, 129,854.70 and 47,203.74 is: 70,805.66
Step by Step Solution
- Step 1: Write the proportion equation
86,569.74 : 129,854.70 = 47,203.74 : x - Step 2: Convert to fraction form
86,569.74/129,854.70 = 47,203.74/x - Step 3: Cross multiply
86,569.74x = 129,854.70 × 47,203.74 - Step 4: Simplify right side
86,569.74x = 6,129,627,496.58 - Step 5: Solve for x
x = 6,129,627,496.58/86,569.74 - Step 6: Final answer
x = 70,805.66
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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.