Finding the Fourth Proportional to 74,402,812.15, 102,725,984.30 and 66,537,922.75
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Solution
The fourth proportional to 74,402,812.15, 102,725,984.30 and 66,537,922.75 is: 91,867,140.63
Step by Step Solution
- Step 1: Write the proportion equation
74,402,812.15 : 102,725,984.30 = 66,537,922.75 : x - Step 2: Convert to fraction form
74,402,812.15/102,725,984.30 = 66,537,922.75/x - Step 3: Cross multiply
74,402,812.15x = 102,725,984.30 × 66,537,922.75 - Step 4: Simplify right side
74,402,812.15x = 6,835,173,607,181,609 - Step 5: Solve for x
x = 6,835,173,607,181,609/74,402,812.15 - Step 6: Final answer
x = 91,867,140.63
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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.