Finding the Fourth Proportional to 77,030,964.63, 106,124,072.13 and 53,789,278.23
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Solution
The fourth proportional to 77,030,964.63, 106,124,072.13 and 53,789,278.23 is: 74,104,449.69
Step by Step Solution
- Step 1: Write the proportion equation
77,030,964.63 : 106,124,072.13 = 53,789,278.23 : x - Step 2: Convert to fraction form
77,030,964.63/106,124,072.13 = 53,789,278.23/x - Step 3: Cross multiply
77,030,964.63x = 106,124,072.13 × 53,789,278.23 - Step 4: Simplify right side
77,030,964.63x = 5,708,337,242,701,158 - Step 5: Solve for x
x = 5,708,337,242,701,158/77,030,964.63 - Step 6: Final answer
x = 74,104,449.69
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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.