Finding the Fourth Proportional to 98,136,438.76, 135,429,211.74 and 54,085,048.84
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Solution
The fourth proportional to 98,136,438.76, 135,429,211.74 and 54,085,048.84 is: 74,637,877.88
Step by Step Solution
- Step 1: Write the proportion equation
98,136,438.76 : 135,429,211.74 = 54,085,048.84 : x - Step 2: Convert to fraction form
98,136,438.76/135,429,211.74 = 54,085,048.84/x - Step 3: Cross multiply
98,136,438.76x = 135,429,211.74 × 54,085,048.84 - Step 4: Simplify right side
98,136,438.76x = 7,324,695,531,320,602 - Step 5: Solve for x
x = 7,324,695,531,320,602/98,136,438.76 - Step 6: Final answer
x = 74,637,877.88
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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.