Finding the Fourth Proportional to 87,681.49, 121,000.42 and 47,395.23
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Solution
The fourth proportional to 87,681.49, 121,000.42 and 47,395.23 is: 65,405.39
Step by Step Solution
- Step 1: Write the proportion equation
87,681.49 : 121,000.42 = 47,395.23 : x - Step 2: Convert to fraction form
87,681.49/121,000.42 = 47,395.23/x - Step 3: Cross multiply
87,681.49x = 121,000.42 × 47,395.23 - Step 4: Simplify right side
87,681.49x = 5,734,842,130.99 - Step 5: Solve for x
x = 5,734,842,130.99/87,681.49 - Step 6: Final answer
x = 65,405.39
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.