Finding the Fourth Proportional to 31,062,117.08, 42,865,865.30 and 18,017,099.48
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Solution
The fourth proportional to 31,062,117.08, 42,865,865.30 and 18,017,099.48 is: 24,863,680.65
Step by Step Solution
- Step 1: Write the proportion equation
31,062,117.08 : 42,865,865.30 = 18,017,099.48 : x - Step 2: Convert to fraction form
31,062,117.08/42,865,865.30 = 18,017,099.48/x - Step 3: Cross multiply
31,062,117.08x = 42,865,865.30 × 18,017,099.48 - Step 4: Simplify right side
31,062,117.08x = 772,318,559,406,380 - Step 5: Solve for x
x = 772,318,559,406,380/31,062,117.08 - Step 6: Final answer
x = 24,863,680.65
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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.