Finding the Fourth Proportional to 101,440.62, 139,987.08 and 56,728.62
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Solution
The fourth proportional to 101,440.62, 139,987.08 and 56,728.62 is: 78,284.95
Step by Step Solution
- Step 1: Write the proportion equation
101,440.62 : 139,987.08 = 56,728.62 : x - Step 2: Convert to fraction form
101,440.62/139,987.08 = 56,728.62/x - Step 3: Cross multiply
101,440.62x = 139,987.08 × 56,728.62 - Step 4: Simplify right side
101,440.62x = 7,941,273,866.23 - Step 5: Solve for x
x = 7,941,273,866.23/101,440.62 - Step 6: Final answer
x = 78,284.95
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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.