Finding the Fourth Proportional to 31,374,849.81, 47,064,985.70 and 8,655,747.06
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Solution
The fourth proportional to 31,374,849.81, 47,064,985.70 and 8,655,747.06 is: 12,984,368.50
Step by Step Solution
- Step 1: Write the proportion equation
31,374,849.81 : 47,064,985.70 = 8,655,747.06 : x - Step 2: Convert to fraction form
31,374,849.81/47,064,985.70 = 8,655,747.06/x - Step 3: Cross multiply
31,374,849.81x = 47,064,985.70 × 8,655,747.06 - Step 4: Simplify right side
31,374,849.81x = 407,382,611,558,438.31 - Step 5: Solve for x
x = 407,382,611,558,438.31/31,374,849.81 - Step 6: Final answer
x = 12,984,368.50
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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.