Finding the Fourth Proportional to 77,378,161.23, 106,781,858.88 and 42,570,104.33
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Solution
The fourth proportional to 77,378,161.23, 106,781,858.88 and 42,570,104.33 is: 58,746,741.99
Step by Step Solution
- Step 1: Write the proportion equation
77,378,161.23 : 106,781,858.88 = 42,570,104.33 : x - Step 2: Convert to fraction form
77,378,161.23/106,781,858.88 = 42,570,104.33/x - Step 3: Cross multiply
77,378,161.23x = 106,781,858.88 × 42,570,104.33 - Step 4: Simplify right side
77,378,161.23x = 4,545,714,873,072,937 - Step 5: Solve for x
x = 4,545,714,873,072,937/77,378,161.23 - Step 6: Final answer
x = 58,746,741.99
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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.