Finding the Fourth Proportional to 76,078,461.89, 104,934,154.53 and 69,819,201.84
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Solution
The fourth proportional to 76,078,461.89, 104,934,154.53 and 69,819,201.84 is: 96,300,828.54
Step by Step Solution
- Step 1: Write the proportion equation
76,078,461.89 : 104,934,154.53 = 69,819,201.84 : x - Step 2: Convert to fraction form
76,078,461.89/104,934,154.53 = 69,819,201.84/x - Step 3: Cross multiply
76,078,461.89x = 104,934,154.53 × 69,819,201.84 - Step 4: Simplify right side
76,078,461.89x = 7,326,418,914,558,656 - Step 5: Solve for x
x = 7,326,418,914,558,656/76,078,461.89 - Step 6: Final answer
x = 96,300,828.54
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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.