Finding the Fourth Proportional to 77,139,533.05, 115,708,981.56 and 27,943,867.09
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Solution
The fourth proportional to 77,139,533.05, 115,708,981.56 and 27,943,867.09 is: 41,915,685.43
Step by Step Solution
- Step 1: Write the proportion equation
77,139,533.05 : 115,708,981.56 = 27,943,867.09 : x - Step 2: Convert to fraction form
77,139,533.05/115,708,981.56 = 27,943,867.09/x - Step 3: Cross multiply
77,139,533.05x = 115,708,981.56 × 27,943,867.09 - Step 4: Simplify right side
77,139,533.05x = 3,233,356,401,831,901 - Step 5: Solve for x
x = 3,233,356,401,831,901/77,139,533.05 - Step 6: Final answer
x = 41,915,685.43
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.