Finding the Fourth Proportional to 96,938.68, 133,720.74 and 56,643.88
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Solution
The fourth proportional to 96,938.68, 133,720.74 and 56,643.88 is: 78,136.63
Step by Step Solution
- Step 1: Write the proportion equation
96,938.68 : 133,720.74 = 56,643.88 : x - Step 2: Convert to fraction form
96,938.68/133,720.74 = 56,643.88/x - Step 3: Cross multiply
96,938.68x = 133,720.74 × 56,643.88 - Step 4: Simplify right side
96,938.68x = 7,574,461,550.07 - Step 5: Solve for x
x = 7,574,461,550.07/96,938.68 - Step 6: Final answer
x = 78,136.63
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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.