Finding the Fourth Proportional to 31,126,246.56, 42,946,655.76 and 18,246,702.24
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Solution
The fourth proportional to 31,126,246.56, 42,946,655.76 and 18,246,702.24 is: 25,176,014.66
Step by Step Solution
- Step 1: Write the proportion equation
31,126,246.56 : 42,946,655.76 = 18,246,702.24 : x - Step 2: Convert to fraction form
31,126,246.56/42,946,655.76 = 18,246,702.24/x - Step 3: Cross multiply
31,126,246.56x = 42,946,655.76 × 18,246,702.24 - Step 4: Simplify right side
31,126,246.56x = 783,634,839,856,500.75 - Step 5: Solve for x
x = 783,634,839,856,500.75/31,126,246.56 - Step 6: Final answer
x = 25,176,014.66
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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.